Home / 2,220.93-3,332.16-989.19

Finding the Fourth Proportional to 2,220.93, 3,332.16 and 989.19

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Solution

The fourth proportional to 2,220.93, 3,332.16 and 989.19 is: 1,484.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.93 : 3,332.16 = 989.19 : x
  2. Step 2: Convert to fraction form
    2,220.93/3,332.16 = 989.19/x
  3. Step 3: Cross multiply
    2,220.93x = 3,332.16 × 989.19
  4. Step 4: Simplify right side
    2,220.93x = 3,296,139.35
  5. Step 5: Solve for x
    x = 3,296,139.35/2,220.93
  6. Step 6: Final answer
    x = 1,484.13

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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.