Home / 1,412.13-1,948.71-1,113.69

Finding the Fourth Proportional to 1,412.13, 1,948.71 and 1,113.69

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Solution

The fourth proportional to 1,412.13, 1,948.71 and 1,113.69 is: 1,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.13 : 1,948.71 = 1,113.69 : x
  2. Step 2: Convert to fraction form
    1,412.13/1,948.71 = 1,113.69/x
  3. Step 3: Cross multiply
    1,412.13x = 1,948.71 × 1,113.69
  4. Step 4: Simplify right side
    1,412.13x = 2,170,258.84
  5. Step 5: Solve for x
    x = 2,170,258.84/1,412.13
  6. Step 6: Final answer
    x = 1,536.87

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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.