Home / 3,187.16-4,778.90-1,312.52

Finding the Fourth Proportional to 3,187.16, 4,778.90 and 1,312.52

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Solution

The fourth proportional to 3,187.16, 4,778.90 and 1,312.52 is: 1,968.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.16 : 4,778.90 = 1,312.52 : x
  2. Step 2: Convert to fraction form
    3,187.16/4,778.90 = 1,312.52/x
  3. Step 3: Cross multiply
    3,187.16x = 4,778.90 × 1,312.52
  4. Step 4: Simplify right side
    3,187.16x = 6,272,401.83
  5. Step 5: Solve for x
    x = 6,272,401.83/3,187.16
  6. Step 6: Final answer
    x = 1,968.02

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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.