Home / 1,712.40-2,555.15-1,607.91

Finding the Fourth Proportional to 1,712.40, 2,555.15 and 1,607.91

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Solution

The fourth proportional to 1,712.40, 2,555.15 and 1,607.91 is: 2,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.40 : 2,555.15 = 1,607.91 : x
  2. Step 2: Convert to fraction form
    1,712.40/2,555.15 = 1,607.91/x
  3. Step 3: Cross multiply
    1,712.40x = 2,555.15 × 1,607.91
  4. Step 4: Simplify right side
    1,712.40x = 4,108,451.24
  5. Step 5: Solve for x
    x = 4,108,451.24/1,712.40
  6. Step 6: Final answer
    x = 2,399.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.