Home / 3,929.16-5,422.34-2,437.80

Finding the Fourth Proportional to 3,929.16, 5,422.34 and 2,437.80

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Solution

The fourth proportional to 3,929.16, 5,422.34 and 2,437.80 is: 3,364.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.16 : 5,422.34 = 2,437.80 : x
  2. Step 2: Convert to fraction form
    3,929.16/5,422.34 = 2,437.80/x
  3. Step 3: Cross multiply
    3,929.16x = 5,422.34 × 2,437.80
  4. Step 4: Simplify right side
    3,929.16x = 13,218,580.45
  5. Step 5: Solve for x
    x = 13,218,580.45/3,929.16
  6. Step 6: Final answer
    x = 3,364.23

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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.