Home / 3,931.39-5,426.65-2,440.18

Finding the Fourth Proportional to 3,931.39, 5,426.65 and 2,440.18

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Solution

The fourth proportional to 3,931.39, 5,426.65 and 2,440.18 is: 3,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.39 : 5,426.65 = 2,440.18 : x
  2. Step 2: Convert to fraction form
    3,931.39/5,426.65 = 2,440.18/x
  3. Step 3: Cross multiply
    3,931.39x = 5,426.65 × 2,440.18
  4. Step 4: Simplify right side
    3,931.39x = 13,241,963.46
  5. Step 5: Solve for x
    x = 13,241,963.46/3,931.39
  6. Step 6: Final answer
    x = 3,368.27

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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.