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Finding the Fourth Proportional to 1,885.92, 2,826.72 and 845.70

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Solution

The fourth proportional to 1,885.92, 2,826.72 and 845.70 is: 1,267.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.92 : 2,826.72 = 845.70 : x
  2. Step 2: Convert to fraction form
    1,885.92/2,826.72 = 845.70/x
  3. Step 3: Cross multiply
    1,885.92x = 2,826.72 × 845.70
  4. Step 4: Simplify right side
    1,885.92x = 2,390,557.10
  5. Step 5: Solve for x
    x = 2,390,557.10/1,885.92
  6. Step 6: Final answer
    x = 1,267.58

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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.