Home / 8,127.95-12,177.35-7,690.55

Finding the Fourth Proportional to 8,127.95, 12,177.35 and 7,690.55

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Solution

The fourth proportional to 8,127.95, 12,177.35 and 7,690.55 is: 11,522.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.95 : 12,177.35 = 7,690.55 : x
  2. Step 2: Convert to fraction form
    8,127.95/12,177.35 = 7,690.55/x
  3. Step 3: Cross multiply
    8,127.95x = 12,177.35 × 7,690.55
  4. Step 4: Simplify right side
    8,127.95x = 93,650,480.59
  5. Step 5: Solve for x
    x = 93,650,480.59/8,127.95
  6. Step 6: Final answer
    x = 11,522.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.