Home / 9,897.59-13,658.30-5,421.37

Finding the Fourth Proportional to 9,897.59, 13,658.30 and 5,421.37

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Solution

The fourth proportional to 9,897.59, 13,658.30 and 5,421.37 is: 7,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,897.59 : 13,658.30 = 5,421.37 : x
  2. Step 2: Convert to fraction form
    9,897.59/13,658.30 = 5,421.37/x
  3. Step 3: Cross multiply
    9,897.59x = 13,658.30 × 5,421.37
  4. Step 4: Simplify right side
    9,897.59x = 74,046,697.87
  5. Step 5: Solve for x
    x = 74,046,697.87/9,897.59
  6. Step 6: Final answer
    x = 7,481.29

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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.