Home / 2,675.12-4,009.80-1,521.20

Finding the Fourth Proportional to 2,675.12, 4,009.80 and 1,521.20

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Solution

The fourth proportional to 2,675.12, 4,009.80 and 1,521.20 is: 2,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.12 : 4,009.80 = 1,521.20 : x
  2. Step 2: Convert to fraction form
    2,675.12/4,009.80 = 1,521.20/x
  3. Step 3: Cross multiply
    2,675.12x = 4,009.80 × 1,521.20
  4. Step 4: Simplify right side
    2,675.12x = 6,099,707.76
  5. Step 5: Solve for x
    x = 6,099,707.76/2,675.12
  6. Step 6: Final answer
    x = 2,280.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.