Home / 2,008.40-2,772.08-1,223.11

Finding the Fourth Proportional to 2,008.40, 2,772.08 and 1,223.11

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Solution

The fourth proportional to 2,008.40, 2,772.08 and 1,223.11 is: 1,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.40 : 2,772.08 = 1,223.11 : x
  2. Step 2: Convert to fraction form
    2,008.40/2,772.08 = 1,223.11/x
  3. Step 3: Cross multiply
    2,008.40x = 2,772.08 × 1,223.11
  4. Step 4: Simplify right side
    2,008.40x = 3,390,554.90
  5. Step 5: Solve for x
    x = 3,390,554.90/2,008.40
  6. Step 6: Final answer
    x = 1,688.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.