Home / 1,555.61-2,143.26-1,161.95

Finding the Fourth Proportional to 1,555.61, 2,143.26 and 1,161.95

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Solution

The fourth proportional to 1,555.61, 2,143.26 and 1,161.95 is: 1,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.61 : 2,143.26 = 1,161.95 : x
  2. Step 2: Convert to fraction form
    1,555.61/2,143.26 = 1,161.95/x
  3. Step 3: Cross multiply
    1,555.61x = 2,143.26 × 1,161.95
  4. Step 4: Simplify right side
    1,555.61x = 2,490,350.24
  5. Step 5: Solve for x
    x = 2,490,350.24/1,555.61
  6. Step 6: Final answer
    x = 1,600.89

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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.