Home / 10,491.32-15,739.65-3,917.57

Finding the Fourth Proportional to 10,491.32, 15,739.65 and 3,917.57

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Solution

The fourth proportional to 10,491.32, 15,739.65 and 3,917.57 is: 5,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.32 : 15,739.65 = 3,917.57 : x
  2. Step 2: Convert to fraction form
    10,491.32/15,739.65 = 3,917.57/x
  3. Step 3: Cross multiply
    10,491.32x = 15,739.65 × 3,917.57
  4. Step 4: Simplify right side
    10,491.32x = 61,661,101.95
  5. Step 5: Solve for x
    x = 61,661,101.95/10,491.32
  6. Step 6: Final answer
    x = 5,877.34

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1.5x scale

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.