Home / 7,721.35-11,582.02-1,877.92

Finding the Fourth Proportional to 7,721.35, 11,582.02 and 1,877.92

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Solution

The fourth proportional to 7,721.35, 11,582.02 and 1,877.92 is: 2,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.35 : 11,582.02 = 1,877.92 : x
  2. Step 2: Convert to fraction form
    7,721.35/11,582.02 = 1,877.92/x
  3. Step 3: Cross multiply
    7,721.35x = 11,582.02 × 1,877.92
  4. Step 4: Simplify right side
    7,721.35x = 21,750,080.39
  5. Step 5: Solve for x
    x = 21,750,080.39/7,721.35
  6. Step 6: Final answer
    x = 2,816.88

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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.