Home / 9,163.50-12,644.56-5,130.55

Finding the Fourth Proportional to 9,163.50, 12,644.56 and 5,130.55

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Solution

The fourth proportional to 9,163.50, 12,644.56 and 5,130.55 is: 7,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.50 : 12,644.56 = 5,130.55 : x
  2. Step 2: Convert to fraction form
    9,163.50/12,644.56 = 5,130.55/x
  3. Step 3: Cross multiply
    9,163.50x = 12,644.56 × 5,130.55
  4. Step 4: Simplify right side
    9,163.50x = 64,873,547.31
  5. Step 5: Solve for x
    x = 64,873,547.31/9,163.50
  6. Step 6: Final answer
    x = 7,079.56

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Find fourth proportional to 9,164.50, 12,645.94 and 5,131.55
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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.