Home / 2,990.40-4,482.54-2,016.80

Finding the Fourth Proportional to 2,990.40, 4,482.54 and 2,016.80

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Solution

The fourth proportional to 2,990.40, 4,482.54 and 2,016.80 is: 3,023.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.40 : 4,482.54 = 2,016.80 : x
  2. Step 2: Convert to fraction form
    2,990.40/4,482.54 = 2,016.80/x
  3. Step 3: Cross multiply
    2,990.40x = 4,482.54 × 2,016.80
  4. Step 4: Simplify right side
    2,990.40x = 9,040,386.67
  5. Step 5: Solve for x
    x = 9,040,386.67/2,990.40
  6. Step 6: Final answer
    x = 3,023.14

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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.