Home / 5,978.24-8,240.40-4,717.28

Finding the Fourth Proportional to 5,978.24, 8,240.40 and 4,717.28

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Solution

The fourth proportional to 5,978.24, 8,240.40 and 4,717.28 is: 6,502.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978.24 : 8,240.40 = 4,717.28 : x
  2. Step 2: Convert to fraction form
    5,978.24/8,240.40 = 4,717.28/x
  3. Step 3: Cross multiply
    5,978.24x = 8,240.40 × 4,717.28
  4. Step 4: Simplify right side
    5,978.24x = 38,872,274.11
  5. Step 5: Solve for x
    x = 38,872,274.11/5,978.24
  6. Step 6: Final answer
    x = 6,502.29

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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.