Home / 7,177.35-9,909.57-6,418.77

Finding the Fourth Proportional to 7,177.35, 9,909.57 and 6,418.77

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Solution

The fourth proportional to 7,177.35, 9,909.57 and 6,418.77 is: 8,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.35 : 9,909.57 = 6,418.77 : x
  2. Step 2: Convert to fraction form
    7,177.35/9,909.57 = 6,418.77/x
  3. Step 3: Cross multiply
    7,177.35x = 9,909.57 × 6,418.77
  4. Step 4: Simplify right side
    7,177.35x = 63,607,250.63
  5. Step 5: Solve for x
    x = 63,607,250.63/7,177.35
  6. Step 6: Final answer
    x = 8,862.22

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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.