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Finding the Fourth Proportional to 4,691.88, 7,038.75 and 1,404.72

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Solution

The fourth proportional to 4,691.88, 7,038.75 and 1,404.72 is: 2,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,691.88 : 7,038.75 = 1,404.72 : x
  2. Step 2: Convert to fraction form
    4,691.88/7,038.75 = 1,404.72/x
  3. Step 3: Cross multiply
    4,691.88x = 7,038.75 × 1,404.72
  4. Step 4: Simplify right side
    4,691.88x = 9,887,472.90
  5. Step 5: Solve for x
    x = 9,887,472.90/4,691.88
  6. Step 6: Final answer
    x = 2,107.36

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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.