Home / 7,877.20-11,812.56-6,237.76

Finding the Fourth Proportional to 7,877.20, 11,812.56 and 6,237.76

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Solution

The fourth proportional to 7,877.20, 11,812.56 and 6,237.76 is: 9,354.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.20 : 11,812.56 = 6,237.76 : x
  2. Step 2: Convert to fraction form
    7,877.20/11,812.56 = 6,237.76/x
  3. Step 3: Cross multiply
    7,877.20x = 11,812.56 × 6,237.76
  4. Step 4: Simplify right side
    7,877.20x = 73,683,914.27
  5. Step 5: Solve for x
    x = 73,683,914.27/7,877.20
  6. Step 6: Final answer
    x = 9,354.07

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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.