Home / 9,388.58-12,956.04-5,139.53

Finding the Fourth Proportional to 9,388.58, 12,956.04 and 5,139.53

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Solution

The fourth proportional to 9,388.58, 12,956.04 and 5,139.53 is: 7,092.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.58 : 12,956.04 = 5,139.53 : x
  2. Step 2: Convert to fraction form
    9,388.58/12,956.04 = 5,139.53/x
  3. Step 3: Cross multiply
    9,388.58x = 12,956.04 × 5,139.53
  4. Step 4: Simplify right side
    9,388.58x = 66,587,988.65
  5. Step 5: Solve for x
    x = 66,587,988.65/9,388.58
  6. Step 6: Final answer
    x = 7,092.45

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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.