Home / 2,417.49-3,626.45-686.12

Finding the Fourth Proportional to 2,417.49, 3,626.45 and 686.12

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Solution

The fourth proportional to 2,417.49, 3,626.45 and 686.12 is: 1,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.49 : 3,626.45 = 686.12 : x
  2. Step 2: Convert to fraction form
    2,417.49/3,626.45 = 686.12/x
  3. Step 3: Cross multiply
    2,417.49x = 3,626.45 × 686.12
  4. Step 4: Simplify right side
    2,417.49x = 2,488,158.31
  5. Step 5: Solve for x
    x = 2,488,158.31/2,417.49
  6. Step 6: Final answer
    x = 1,029.23

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1.5x scale

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.