Home / 3,131.18-4,685.02-1,877.16

Finding the Fourth Proportional to 3,131.18, 4,685.02 and 1,877.16

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Solution

The fourth proportional to 3,131.18, 4,685.02 and 1,877.16 is: 2,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.18 : 4,685.02 = 1,877.16 : x
  2. Step 2: Convert to fraction form
    3,131.18/4,685.02 = 1,877.16/x
  3. Step 3: Cross multiply
    3,131.18x = 4,685.02 × 1,877.16
  4. Step 4: Simplify right side
    3,131.18x = 8,794,532.14
  5. Step 5: Solve for x
    x = 8,794,532.14/3,131.18
  6. Step 6: Final answer
    x = 2,808.70

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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.