Home / 1,126.70-1,683.35-1,088.42

Finding the Fourth Proportional to 1,126.70, 1,683.35 and 1,088.42

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Solution

The fourth proportional to 1,126.70, 1,683.35 and 1,088.42 is: 1,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.70 : 1,683.35 = 1,088.42 : x
  2. Step 2: Convert to fraction form
    1,126.70/1,683.35 = 1,088.42/x
  3. Step 3: Cross multiply
    1,126.70x = 1,683.35 × 1,088.42
  4. Step 4: Simplify right side
    1,126.70x = 1,832,191.81
  5. Step 5: Solve for x
    x = 1,832,191.81/1,126.70
  6. Step 6: Final answer
    x = 1,626.16

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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.