Home / 9,371.02-12,930.69-5,390.68

Finding the Fourth Proportional to 9,371.02, 12,930.69 and 5,390.68

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Solution

The fourth proportional to 9,371.02, 12,930.69 and 5,390.68 is: 7,438.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.02 : 12,930.69 = 5,390.68 : x
  2. Step 2: Convert to fraction form
    9,371.02/12,930.69 = 5,390.68/x
  3. Step 3: Cross multiply
    9,371.02x = 12,930.69 × 5,390.68
  4. Step 4: Simplify right side
    9,371.02x = 69,705,211.97
  5. Step 5: Solve for x
    x = 69,705,211.97/9,371.02
  6. Step 6: Final answer
    x = 7,438.38

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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.