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Finding the Fourth Proportional to 5,103, 7,655.58 and 1,640.52

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Solution

The fourth proportional to 5,103, 7,655.58 and 1,640.52 is: 2,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103 : 7,655.58 = 1,640.52 : x
  2. Step 2: Convert to fraction form
    5,103/7,655.58 = 1,640.52/x
  3. Step 3: Cross multiply
    5,103x = 7,655.58 × 1,640.52
  4. Step 4: Simplify right side
    5,103x = 12,559,132.10
  5. Step 5: Solve for x
    x = 12,559,132.10/5,103
  6. Step 6: Final answer
    x = 2,461.13

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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.