Home / 9,134.35-12,605.40-5,155.49

Finding the Fourth Proportional to 9,134.35, 12,605.40 and 5,155.49

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Solution

The fourth proportional to 9,134.35, 12,605.40 and 5,155.49 is: 7,114.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,134.35 : 12,605.40 = 5,155.49 : x
  2. Step 2: Convert to fraction form
    9,134.35/12,605.40 = 5,155.49/x
  3. Step 3: Cross multiply
    9,134.35x = 12,605.40 × 5,155.49
  4. Step 4: Simplify right side
    9,134.35x = 64,987,013.65
  5. Step 5: Solve for x
    x = 64,987,013.65/9,134.35
  6. Step 6: Final answer
    x = 7,114.57

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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.