Home / 3,142.90-4,337.35-1,948.15

Finding the Fourth Proportional to 3,142.90, 4,337.35 and 1,948.15

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Solution

The fourth proportional to 3,142.90, 4,337.35 and 1,948.15 is: 2,688.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.90 : 4,337.35 = 1,948.15 : x
  2. Step 2: Convert to fraction form
    3,142.90/4,337.35 = 1,948.15/x
  3. Step 3: Cross multiply
    3,142.90x = 4,337.35 × 1,948.15
  4. Step 4: Simplify right side
    3,142.90x = 8,449,808.95
  5. Step 5: Solve for x
    x = 8,449,808.95/3,142.90
  6. Step 6: Final answer
    x = 2,688.54

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1.5x scale

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.