Home / 3,520.31-4,857.95-1,948.40

Finding the Fourth Proportional to 3,520.31, 4,857.95 and 1,948.40

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Solution

The fourth proportional to 3,520.31, 4,857.95 and 1,948.40 is: 2,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.31 : 4,857.95 = 1,948.40 : x
  2. Step 2: Convert to fraction form
    3,520.31/4,857.95 = 1,948.40/x
  3. Step 3: Cross multiply
    3,520.31x = 4,857.95 × 1,948.40
  4. Step 4: Simplify right side
    3,520.31x = 9,465,195.75
  5. Step 5: Solve for x
    x = 9,465,195.75/3,520.31
  6. Step 6: Final answer
    x = 2,688.74

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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.