Home / 9,339.47-12,889.28-5,148.53

Finding the Fourth Proportional to 9,339.47, 12,889.28 and 5,148.53

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Solution

The fourth proportional to 9,339.47, 12,889.28 and 5,148.53 is: 7,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.47 : 12,889.28 = 5,148.53 : x
  2. Step 2: Convert to fraction form
    9,339.47/12,889.28 = 5,148.53/x
  3. Step 3: Cross multiply
    9,339.47x = 12,889.28 × 5,148.53
  4. Step 4: Simplify right side
    9,339.47x = 66,360,812.56
  5. Step 5: Solve for x
    x = 66,360,812.56/9,339.47
  6. Step 6: Final answer
    x = 7,105.42

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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.