Home / 1,913.38-2,642.26-1,242.34

Finding the Fourth Proportional to 1,913.38, 2,642.26 and 1,242.34

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Solution

The fourth proportional to 1,913.38, 2,642.26 and 1,242.34 is: 1,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.38 : 2,642.26 = 1,242.34 : x
  2. Step 2: Convert to fraction form
    1,913.38/2,642.26 = 1,242.34/x
  3. Step 3: Cross multiply
    1,913.38x = 2,642.26 × 1,242.34
  4. Step 4: Simplify right side
    1,913.38x = 3,282,585.29
  5. Step 5: Solve for x
    x = 3,282,585.29/1,913.38
  6. Step 6: Final answer
    x = 1,715.60

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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.