Home / 2,957.13-4,079.12-1,909.19

Finding the Fourth Proportional to 2,957.13, 4,079.12 and 1,909.19

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Solution

The fourth proportional to 2,957.13, 4,079.12 and 1,909.19 is: 2,633.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.13 : 4,079.12 = 1,909.19 : x
  2. Step 2: Convert to fraction form
    2,957.13/4,079.12 = 1,909.19/x
  3. Step 3: Cross multiply
    2,957.13x = 4,079.12 × 1,909.19
  4. Step 4: Simplify right side
    2,957.13x = 7,787,815.76
  5. Step 5: Solve for x
    x = 7,787,815.76/2,957.13
  6. Step 6: Final answer
    x = 2,633.57

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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.