Home / 1,589.17-2,191.67-959.55

Finding the Fourth Proportional to 1,589.17, 2,191.67 and 959.55

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Solution

The fourth proportional to 1,589.17, 2,191.67 and 959.55 is: 1,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.17 : 2,191.67 = 959.55 : x
  2. Step 2: Convert to fraction form
    1,589.17/2,191.67 = 959.55/x
  3. Step 3: Cross multiply
    1,589.17x = 2,191.67 × 959.55
  4. Step 4: Simplify right side
    1,589.17x = 2,103,012.93
  5. Step 5: Solve for x
    x = 2,103,012.93/1,589.17
  6. Step 6: Final answer
    x = 1,323.34

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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.