Home / 2,990.67-4,486.30-1,143.34

Finding the Fourth Proportional to 2,990.67, 4,486.30 and 1,143.34

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Solution

The fourth proportional to 2,990.67, 4,486.30 and 1,143.34 is: 1,715.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.67 : 4,486.30 = 1,143.34 : x
  2. Step 2: Convert to fraction form
    2,990.67/4,486.30 = 1,143.34/x
  3. Step 3: Cross multiply
    2,990.67x = 4,486.30 × 1,143.34
  4. Step 4: Simplify right side
    2,990.67x = 5,129,349.42
  5. Step 5: Solve for x
    x = 5,129,349.42/2,990.67
  6. Step 6: Final answer
    x = 1,715.12

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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.