Home / 1,401.30-2,101.95-914.76

Finding the Fourth Proportional to 1,401.30, 2,101.95 and 914.76

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Solution

The fourth proportional to 1,401.30, 2,101.95 and 914.76 is: 1,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.30 : 2,101.95 = 914.76 : x
  2. Step 2: Convert to fraction form
    1,401.30/2,101.95 = 914.76/x
  3. Step 3: Cross multiply
    1,401.30x = 2,101.95 × 914.76
  4. Step 4: Simplify right side
    1,401.30x = 1,922,779.78
  5. Step 5: Solve for x
    x = 1,922,779.78/1,401.30
  6. Step 6: Final answer
    x = 1,372.14

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1.5x scale

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.