Home / 7,948.80-10,972.80-6,177.60

Finding the Fourth Proportional to 7,948.80, 10,972.80 and 6,177.60

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Solution

The fourth proportional to 7,948.80, 10,972.80 and 6,177.60 is: 8,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.80 : 10,972.80 = 6,177.60 : x
  2. Step 2: Convert to fraction form
    7,948.80/10,972.80 = 6,177.60/x
  3. Step 3: Cross multiply
    7,948.80x = 10,972.80 × 6,177.60
  4. Step 4: Simplify right side
    7,948.80x = 67,785,569.28
  5. Step 5: Solve for x
    x = 67,785,569.28/7,948.80
  6. Step 6: Final answer
    x = 8,527.77

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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.