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Finding the Fourth Proportional to 1,607.52, 2,220.72 and 1,085.84

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Solution

The fourth proportional to 1,607.52, 2,220.72 and 1,085.84 is: 1,500.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.52 : 2,220.72 = 1,085.84 : x
  2. Step 2: Convert to fraction form
    1,607.52/2,220.72 = 1,085.84/x
  3. Step 3: Cross multiply
    1,607.52x = 2,220.72 × 1,085.84
  4. Step 4: Simplify right side
    1,607.52x = 2,411,346.60
  5. Step 5: Solve for x
    x = 2,411,346.60/1,607.52
  6. Step 6: Final answer
    x = 1,500.04

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.