Home / 8,747.08-12,074.34-6,407.80

Finding the Fourth Proportional to 8,747.08, 12,074.34 and 6,407.80

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Solution

The fourth proportional to 8,747.08, 12,074.34 and 6,407.80 is: 8,845.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.08 : 12,074.34 = 6,407.80 : x
  2. Step 2: Convert to fraction form
    8,747.08/12,074.34 = 6,407.80/x
  3. Step 3: Cross multiply
    8,747.08x = 12,074.34 × 6,407.80
  4. Step 4: Simplify right side
    8,747.08x = 77,369,955.85
  5. Step 5: Solve for x
    x = 77,369,955.85/8,747.08
  6. Step 6: Final answer
    x = 8,845.23

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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.