Home / 8,649.17-12,973.15-4,939.78

Finding the Fourth Proportional to 8,649.17, 12,973.15 and 4,939.78

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Solution

The fourth proportional to 8,649.17, 12,973.15 and 4,939.78 is: 7,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.17 : 12,973.15 = 4,939.78 : x
  2. Step 2: Convert to fraction form
    8,649.17/12,973.15 = 4,939.78/x
  3. Step 3: Cross multiply
    8,649.17x = 12,973.15 × 4,939.78
  4. Step 4: Simplify right side
    8,649.17x = 64,084,417.34
  5. Step 5: Solve for x
    x = 64,084,417.34/8,649.17
  6. Step 6: Final answer
    x = 7,409.31

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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.