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Finding the Fourth Proportional to 3,132.70, 4,693.65 and 1,485.70

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Solution

The fourth proportional to 3,132.70, 4,693.65 and 1,485.70 is: 2,225.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.70 : 4,693.65 = 1,485.70 : x
  2. Step 2: Convert to fraction form
    3,132.70/4,693.65 = 1,485.70/x
  3. Step 3: Cross multiply
    3,132.70x = 4,693.65 × 1,485.70
  4. Step 4: Simplify right side
    3,132.70x = 6,973,355.81
  5. Step 5: Solve for x
    x = 6,973,355.81/3,132.70
  6. Step 6: Final answer
    x = 2,225.99

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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.