Home / 2,948.40-4,072.68-2,258.28

Finding the Fourth Proportional to 2,948.40, 4,072.68 and 2,258.28

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Solution

The fourth proportional to 2,948.40, 4,072.68 and 2,258.28 is: 3,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.40 : 4,072.68 = 2,258.28 : x
  2. Step 2: Convert to fraction form
    2,948.40/4,072.68 = 2,258.28/x
  3. Step 3: Cross multiply
    2,948.40x = 4,072.68 × 2,258.28
  4. Step 4: Simplify right side
    2,948.40x = 9,197,251.79
  5. Step 5: Solve for x
    x = 9,197,251.79/2,948.40
  6. Step 6: Final answer
    x = 3,119.40

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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.