Home / 2,820.52-3,892.08-1,686.16

Finding the Fourth Proportional to 2,820.52, 3,892.08 and 1,686.16

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Solution

The fourth proportional to 2,820.52, 3,892.08 and 1,686.16 is: 2,326.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.52 : 3,892.08 = 1,686.16 : x
  2. Step 2: Convert to fraction form
    2,820.52/3,892.08 = 1,686.16/x
  3. Step 3: Cross multiply
    2,820.52x = 3,892.08 × 1,686.16
  4. Step 4: Simplify right side
    2,820.52x = 6,562,669.61
  5. Step 5: Solve for x
    x = 6,562,669.61/2,820.52
  6. Step 6: Final answer
    x = 2,326.76

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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.