Home / 9,890.80-13,649.18-5,353.37

Finding the Fourth Proportional to 9,890.80, 13,649.18 and 5,353.37

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Solution

The fourth proportional to 9,890.80, 13,649.18 and 5,353.37 is: 7,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890.80 : 13,649.18 = 5,353.37 : x
  2. Step 2: Convert to fraction form
    9,890.80/13,649.18 = 5,353.37/x
  3. Step 3: Cross multiply
    9,890.80x = 13,649.18 × 5,353.37
  4. Step 4: Simplify right side
    9,890.80x = 73,069,110.74
  5. Step 5: Solve for x
    x = 73,069,110.74/9,890.80
  6. Step 6: Final answer
    x = 7,387.58

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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.