Home / 8,488.80-11,715.12-4,905

Finding the Fourth Proportional to 8,488.80, 11,715.12 and 4,905

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Solution

The fourth proportional to 8,488.80, 11,715.12 and 4,905 is: 6,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.80 : 11,715.12 = 4,905 : x
  2. Step 2: Convert to fraction form
    8,488.80/11,715.12 = 4,905/x
  3. Step 3: Cross multiply
    8,488.80x = 11,715.12 × 4,905
  4. Step 4: Simplify right side
    8,488.80x = 57,462,663.60
  5. Step 5: Solve for x
    x = 57,462,663.60/8,488.80
  6. Step 6: Final answer
    x = 6,769.23

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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.