Home / 1,401.28-2,101.84-476.80

Finding the Fourth Proportional to 1,401.28, 2,101.84 and 476.80

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Solution

The fourth proportional to 1,401.28, 2,101.84 and 476.80 is: 715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.28 : 2,101.84 = 476.80 : x
  2. Step 2: Convert to fraction form
    1,401.28/2,101.84 = 476.80/x
  3. Step 3: Cross multiply
    1,401.28x = 2,101.84 × 476.80
  4. Step 4: Simplify right side
    1,401.28x = 1,002,157.31
  5. Step 5: Solve for x
    x = 1,002,157.31/1,401.28
  6. Step 6: Final answer
    x = 715.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.