Home / 3,570.80-4,929.36-2,686.92

Finding the Fourth Proportional to 3,570.80, 4,929.36 and 2,686.92

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Solution

The fourth proportional to 3,570.80, 4,929.36 and 2,686.92 is: 3,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.80 : 4,929.36 = 2,686.92 : x
  2. Step 2: Convert to fraction form
    3,570.80/4,929.36 = 2,686.92/x
  3. Step 3: Cross multiply
    3,570.80x = 4,929.36 × 2,686.92
  4. Step 4: Simplify right side
    3,570.80x = 13,244,795.97
  5. Step 5: Solve for x
    x = 13,244,795.97/3,570.80
  6. Step 6: Final answer
    x = 3,709.20

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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.