Home / 7,810.28-11,715.80-5,433.76

Finding the Fourth Proportional to 7,810.28, 11,715.80 and 5,433.76

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Solution

The fourth proportional to 7,810.28, 11,715.80 and 5,433.76 is: 8,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.28 : 11,715.80 = 5,433.76 : x
  2. Step 2: Convert to fraction form
    7,810.28/11,715.80 = 5,433.76/x
  3. Step 3: Cross multiply
    7,810.28x = 11,715.80 × 5,433.76
  4. Step 4: Simplify right side
    7,810.28x = 63,660,845.41
  5. Step 5: Solve for x
    x = 63,660,845.41/7,810.28
  6. Step 6: Final answer
    x = 8,150.90

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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.