Home / 8,478.28-11,700-4,701.47

Finding the Fourth Proportional to 8,478.28, 11,700 and 4,701.47

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Solution

The fourth proportional to 8,478.28, 11,700 and 4,701.47 is: 6,488.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.28 : 11,700 = 4,701.47 : x
  2. Step 2: Convert to fraction form
    8,478.28/11,700 = 4,701.47/x
  3. Step 3: Cross multiply
    8,478.28x = 11,700 × 4,701.47
  4. Step 4: Simplify right side
    8,478.28x = 55,007,228.25
  5. Step 5: Solve for x
    x = 55,007,228.25/8,478.28
  6. Step 6: Final answer
    x = 6,488.02

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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.