Home / 1,089.28-1,626.17-1,055.08

Finding the Fourth Proportional to 1,089.28, 1,626.17 and 1,055.08

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Solution

The fourth proportional to 1,089.28, 1,626.17 and 1,055.08 is: 1,575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.28 : 1,626.17 = 1,055.08 : x
  2. Step 2: Convert to fraction form
    1,089.28/1,626.17 = 1,055.08/x
  3. Step 3: Cross multiply
    1,089.28x = 1,626.17 × 1,055.08
  4. Step 4: Simplify right side
    1,089.28x = 1,715,739.44
  5. Step 5: Solve for x
    x = 1,715,739.44/1,089.28
  6. Step 6: Final answer
    x = 1,575.11

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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.