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Finding the Fourth Proportional to 7,041.96, 9,717.12 and 4,057.20

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Solution

The fourth proportional to 7,041.96, 9,717.12 and 4,057.20 is: 5,598.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,041.96 : 9,717.12 = 4,057.20 : x
  2. Step 2: Convert to fraction form
    7,041.96/9,717.12 = 4,057.20/x
  3. Step 3: Cross multiply
    7,041.96x = 9,717.12 × 4,057.20
  4. Step 4: Simplify right side
    7,041.96x = 39,424,299.26
  5. Step 5: Solve for x
    x = 39,424,299.26/7,041.96
  6. Step 6: Final answer
    x = 5,598.48

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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.