Home / 1,712.29-2,363.85-1,187.41

Finding the Fourth Proportional to 1,712.29, 2,363.85 and 1,187.41

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Solution

The fourth proportional to 1,712.29, 2,363.85 and 1,187.41 is: 1,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.29 : 2,363.85 = 1,187.41 : x
  2. Step 2: Convert to fraction form
    1,712.29/2,363.85 = 1,187.41/x
  3. Step 3: Cross multiply
    1,712.29x = 2,363.85 × 1,187.41
  4. Step 4: Simplify right side
    1,712.29x = 2,806,859.13
  5. Step 5: Solve for x
    x = 2,806,859.13/1,712.29
  6. Step 6: Final answer
    x = 1,639.24

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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.