Home / 8,915.90-12,305.40-5,330.93

Finding the Fourth Proportional to 8,915.90, 12,305.40 and 5,330.93

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Solution

The fourth proportional to 8,915.90, 12,305.40 and 5,330.93 is: 7,357.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.90 : 12,305.40 = 5,330.93 : x
  2. Step 2: Convert to fraction form
    8,915.90/12,305.40 = 5,330.93/x
  3. Step 3: Cross multiply
    8,915.90x = 12,305.40 × 5,330.93
  4. Step 4: Simplify right side
    8,915.90x = 65,599,226.02
  5. Step 5: Solve for x
    x = 65,599,226.02/8,915.90
  6. Step 6: Final answer
    x = 7,357.56

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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.