Home / 2,169.02-3,253.95-707.78

Finding the Fourth Proportional to 2,169.02, 3,253.95 and 707.78

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Solution

The fourth proportional to 2,169.02, 3,253.95 and 707.78 is: 1,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.02 : 3,253.95 = 707.78 : x
  2. Step 2: Convert to fraction form
    2,169.02/3,253.95 = 707.78/x
  3. Step 3: Cross multiply
    2,169.02x = 3,253.95 × 707.78
  4. Step 4: Simplify right side
    2,169.02x = 2,303,064.46
  5. Step 5: Solve for x
    x = 2,303,064.46/2,169.02
  6. Step 6: Final answer
    x = 1,061.80

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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.