Home / 2,816.96-3,888.48-2,521.72

Finding the Fourth Proportional to 2,816.96, 3,888.48 and 2,521.72

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Solution

The fourth proportional to 2,816.96, 3,888.48 and 2,521.72 is: 3,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.96 : 3,888.48 = 2,521.72 : x
  2. Step 2: Convert to fraction form
    2,816.96/3,888.48 = 2,521.72/x
  3. Step 3: Cross multiply
    2,816.96x = 3,888.48 × 2,521.72
  4. Step 4: Simplify right side
    2,816.96x = 9,805,657.79
  5. Step 5: Solve for x
    x = 9,805,657.79/2,816.96
  6. Step 6: Final answer
    x = 3,480.94

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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.