Home / 2,875.16-3,966.48-1,680.08

Finding the Fourth Proportional to 2,875.16, 3,966.48 and 1,680.08

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Solution

The fourth proportional to 2,875.16, 3,966.48 and 1,680.08 is: 2,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.16 : 3,966.48 = 1,680.08 : x
  2. Step 2: Convert to fraction form
    2,875.16/3,966.48 = 1,680.08/x
  3. Step 3: Cross multiply
    2,875.16x = 3,966.48 × 1,680.08
  4. Step 4: Simplify right side
    2,875.16x = 6,663,983.89
  5. Step 5: Solve for x
    x = 6,663,983.89/2,875.16
  6. Step 6: Final answer
    x = 2,317.78

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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.