Home / 9,131.76-12,603.08-5,154.48

Finding the Fourth Proportional to 9,131.76, 12,603.08 and 5,154.48

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Solution

The fourth proportional to 9,131.76, 12,603.08 and 5,154.48 is: 7,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.76 : 12,603.08 = 5,154.48 : x
  2. Step 2: Convert to fraction form
    9,131.76/12,603.08 = 5,154.48/x
  3. Step 3: Cross multiply
    9,131.76x = 12,603.08 × 5,154.48
  4. Step 4: Simplify right side
    9,131.76x = 64,962,323.80
  5. Step 5: Solve for x
    x = 64,962,323.80/9,131.76
  6. Step 6: Final answer
    x = 7,113.89

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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.