Home / 1,551.13-2,140.55-1,178.42

Finding the Fourth Proportional to 1,551.13, 2,140.55 and 1,178.42

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Solution

The fourth proportional to 1,551.13, 2,140.55 and 1,178.42 is: 1,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.13 : 2,140.55 = 1,178.42 : x
  2. Step 2: Convert to fraction form
    1,551.13/2,140.55 = 1,178.42/x
  3. Step 3: Cross multiply
    1,551.13x = 2,140.55 × 1,178.42
  4. Step 4: Simplify right side
    1,551.13x = 2,522,466.93
  5. Step 5: Solve for x
    x = 2,522,466.93/1,551.13
  6. Step 6: Final answer
    x = 1,626.21

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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.