Home / 1,541.33-2,126.89-869.18

Finding the Fourth Proportional to 1,541.33, 2,126.89 and 869.18

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Solution

The fourth proportional to 1,541.33, 2,126.89 and 869.18 is: 1,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.33 : 2,126.89 = 869.18 : x
  2. Step 2: Convert to fraction form
    1,541.33/2,126.89 = 869.18/x
  3. Step 3: Cross multiply
    1,541.33x = 2,126.89 × 869.18
  4. Step 4: Simplify right side
    1,541.33x = 1,848,639.62
  5. Step 5: Solve for x
    x = 1,848,639.62/1,541.33
  6. Step 6: Final answer
    x = 1,199.38

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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.