Home / 9,386.58-12,939.68-7,144.55

Finding the Fourth Proportional to 9,386.58, 12,939.68 and 7,144.55

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Solution

The fourth proportional to 9,386.58, 12,939.68 and 7,144.55 is: 9,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,386.58 : 12,939.68 = 7,144.55 : x
  2. Step 2: Convert to fraction form
    9,386.58/12,939.68 = 7,144.55/x
  3. Step 3: Cross multiply
    9,386.58x = 12,939.68 × 7,144.55
  4. Step 4: Simplify right side
    9,386.58x = 92,448,265.22
  5. Step 5: Solve for x
    x = 92,448,265.22/9,386.58
  6. Step 6: Final answer
    x = 9,848.98

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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.