Home / 7,926.91-10,939.19-4,390.18

Finding the Fourth Proportional to 7,926.91, 10,939.19 and 4,390.18

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Solution

The fourth proportional to 7,926.91, 10,939.19 and 4,390.18 is: 6,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.91 : 10,939.19 = 4,390.18 : x
  2. Step 2: Convert to fraction form
    7,926.91/10,939.19 = 4,390.18/x
  3. Step 3: Cross multiply
    7,926.91x = 10,939.19 × 4,390.18
  4. Step 4: Simplify right side
    7,926.91x = 48,024,963.86
  5. Step 5: Solve for x
    x = 48,024,963.86/7,926.91
  6. Step 6: Final answer
    x = 6,058.47

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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.