Home / 2,657.12-3,666.88-1,478.32

Finding the Fourth Proportional to 2,657.12, 3,666.88 and 1,478.32

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Solution

The fourth proportional to 2,657.12, 3,666.88 and 1,478.32 is: 2,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.12 : 3,666.88 = 1,478.32 : x
  2. Step 2: Convert to fraction form
    2,657.12/3,666.88 = 1,478.32/x
  3. Step 3: Cross multiply
    2,657.12x = 3,666.88 × 1,478.32
  4. Step 4: Simplify right side
    2,657.12x = 5,420,822.04
  5. Step 5: Solve for x
    x = 5,420,822.04/2,657.12
  6. Step 6: Final answer
    x = 2,040.11

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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.