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Finding the Fourth Proportional to 3,153.68, 4,730.52 and 845

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Solution

The fourth proportional to 3,153.68, 4,730.52 and 845 is: 1,267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.68 : 4,730.52 = 845 : x
  2. Step 2: Convert to fraction form
    3,153.68/4,730.52 = 845/x
  3. Step 3: Cross multiply
    3,153.68x = 4,730.52 × 845
  4. Step 4: Simplify right side
    3,153.68x = 3,997,289.40
  5. Step 5: Solve for x
    x = 3,997,289.40/3,153.68
  6. Step 6: Final answer
    x = 1,267.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,154.68, 4,732.02 and 846
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.