Home / 9,897.04-13,658.16-5,420.98

Finding the Fourth Proportional to 9,897.04, 13,658.16 and 5,420.98

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Solution

The fourth proportional to 9,897.04, 13,658.16 and 5,420.98 is: 7,481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,897.04 : 13,658.16 = 5,420.98 : x
  2. Step 2: Convert to fraction form
    9,897.04/13,658.16 = 5,420.98/x
  3. Step 3: Cross multiply
    9,897.04x = 13,658.16 × 5,420.98
  4. Step 4: Simplify right side
    9,897.04x = 74,040,612.20
  5. Step 5: Solve for x
    x = 74,040,612.20/9,897.04
  6. Step 6: Final answer
    x = 7,481.09

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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.