Home / 2,274.60-3,139.70-1,435.40

Finding the Fourth Proportional to 2,274.60, 3,139.70 and 1,435.40

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Solution

The fourth proportional to 2,274.60, 3,139.70 and 1,435.40 is: 1,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.60 : 3,139.70 = 1,435.40 : x
  2. Step 2: Convert to fraction form
    2,274.60/3,139.70 = 1,435.40/x
  3. Step 3: Cross multiply
    2,274.60x = 3,139.70 × 1,435.40
  4. Step 4: Simplify right side
    2,274.60x = 4,506,725.38
  5. Step 5: Solve for x
    x = 4,506,725.38/2,274.60
  6. Step 6: Final answer
    x = 1,981.33

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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.