Home / 3,151.36-4,349.28-1,909.36

Finding the Fourth Proportional to 3,151.36, 4,349.28 and 1,909.36

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Solution

The fourth proportional to 3,151.36, 4,349.28 and 1,909.36 is: 2,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.36 : 4,349.28 = 1,909.36 : x
  2. Step 2: Convert to fraction form
    3,151.36/4,349.28 = 1,909.36/x
  3. Step 3: Cross multiply
    3,151.36x = 4,349.28 × 1,909.36
  4. Step 4: Simplify right side
    3,151.36x = 8,304,341.26
  5. Step 5: Solve for x
    x = 8,304,341.26/3,151.36
  6. Step 6: Final answer
    x = 2,635.16

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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.