Home / 2,154.28-2,981.46-2,102.51

Finding the Fourth Proportional to 2,154.28, 2,981.46 and 2,102.51

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Solution

The fourth proportional to 2,154.28, 2,981.46 and 2,102.51 is: 2,909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.28 : 2,981.46 = 2,102.51 : x
  2. Step 2: Convert to fraction form
    2,154.28/2,981.46 = 2,102.51/x
  3. Step 3: Cross multiply
    2,154.28x = 2,981.46 × 2,102.51
  4. Step 4: Simplify right side
    2,154.28x = 6,268,549.46
  5. Step 5: Solve for x
    x = 6,268,549.46/2,154.28
  6. Step 6: Final answer
    x = 2,909.81

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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.