Home / 2,020.40-3,030.17-1,186.91

Finding the Fourth Proportional to 2,020.40, 3,030.17 and 1,186.91

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Solution

The fourth proportional to 2,020.40, 3,030.17 and 1,186.91 is: 1,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.40 : 3,030.17 = 1,186.91 : x
  2. Step 2: Convert to fraction form
    2,020.40/3,030.17 = 1,186.91/x
  3. Step 3: Cross multiply
    2,020.40x = 3,030.17 × 1,186.91
  4. Step 4: Simplify right side
    2,020.40x = 3,596,517.99
  5. Step 5: Solve for x
    x = 3,596,517.99/2,020.40
  6. Step 6: Final answer
    x = 1,780.11

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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.