Home / 2,799.72-3,854.40-2,661.18

Finding the Fourth Proportional to 2,799.72, 3,854.40 and 2,661.18

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Solution

The fourth proportional to 2,799.72, 3,854.40 and 2,661.18 is: 3,663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.72 : 3,854.40 = 2,661.18 : x
  2. Step 2: Convert to fraction form
    2,799.72/3,854.40 = 2,661.18/x
  3. Step 3: Cross multiply
    2,799.72x = 3,854.40 × 2,661.18
  4. Step 4: Simplify right side
    2,799.72x = 10,257,252.19
  5. Step 5: Solve for x
    x = 10,257,252.19/2,799.72
  6. Step 6: Final answer
    x = 3,663.67

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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.