Home / 2,208.07-3,312.10-669.07

Finding the Fourth Proportional to 2,208.07, 3,312.10 and 669.07

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Solution

The fourth proportional to 2,208.07, 3,312.10 and 669.07 is: 1,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.07 : 3,312.10 = 669.07 : x
  2. Step 2: Convert to fraction form
    2,208.07/3,312.10 = 669.07/x
  3. Step 3: Cross multiply
    2,208.07x = 3,312.10 × 669.07
  4. Step 4: Simplify right side
    2,208.07x = 2,216,026.75
  5. Step 5: Solve for x
    x = 2,216,026.75/2,208.07
  6. Step 6: Final answer
    x = 1,003.60

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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.