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Finding the Fourth Proportional to 5,404.53, 7,457.71 and 3,988.99

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Solution

The fourth proportional to 5,404.53, 7,457.71 and 3,988.99 is: 5,504.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,404.53 : 7,457.71 = 3,988.99 : x
  2. Step 2: Convert to fraction form
    5,404.53/7,457.71 = 3,988.99/x
  3. Step 3: Cross multiply
    5,404.53x = 7,457.71 × 3,988.99
  4. Step 4: Simplify right side
    5,404.53x = 29,748,710.67
  5. Step 5: Solve for x
    x = 29,748,710.67/5,404.53
  6. Step 6: Final answer
    x = 5,504.40

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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.