Home / 9,939.28-14,910-4,390.24

Finding the Fourth Proportional to 9,939.28, 14,910 and 4,390.24

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Solution

The fourth proportional to 9,939.28, 14,910 and 4,390.24 is: 6,585.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.28 : 14,910 = 4,390.24 : x
  2. Step 2: Convert to fraction form
    9,939.28/14,910 = 4,390.24/x
  3. Step 3: Cross multiply
    9,939.28x = 14,910 × 4,390.24
  4. Step 4: Simplify right side
    9,939.28x = 65,458,478.40
  5. Step 5: Solve for x
    x = 65,458,478.40/9,939.28
  6. Step 6: Final answer
    x = 6,585.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.