Home / 2,101.38-2,900.51-1,402.75

Finding the Fourth Proportional to 2,101.38, 2,900.51 and 1,402.75

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Solution

The fourth proportional to 2,101.38, 2,900.51 and 1,402.75 is: 1,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.38 : 2,900.51 = 1,402.75 : x
  2. Step 2: Convert to fraction form
    2,101.38/2,900.51 = 1,402.75/x
  3. Step 3: Cross multiply
    2,101.38x = 2,900.51 × 1,402.75
  4. Step 4: Simplify right side
    2,101.38x = 4,068,690.40
  5. Step 5: Solve for x
    x = 4,068,690.40/2,101.38
  6. Step 6: Final answer
    x = 1,936.20

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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.