Home / 5,287.76-7,291.02-4,289.96

Finding the Fourth Proportional to 5,287.76, 7,291.02 and 4,289.96

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Solution

The fourth proportional to 5,287.76, 7,291.02 and 4,289.96 is: 5,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.76 : 7,291.02 = 4,289.96 : x
  2. Step 2: Convert to fraction form
    5,287.76/7,291.02 = 4,289.96/x
  3. Step 3: Cross multiply
    5,287.76x = 7,291.02 × 4,289.96
  4. Step 4: Simplify right side
    5,287.76x = 31,278,184.16
  5. Step 5: Solve for x
    x = 31,278,184.16/5,287.76
  6. Step 6: Final answer
    x = 5,915.20

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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.