Home / 7,081.47-10,621.35-1,887.21

Finding the Fourth Proportional to 7,081.47, 10,621.35 and 1,887.21

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Solution

The fourth proportional to 7,081.47, 10,621.35 and 1,887.21 is: 2,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.47 : 10,621.35 = 1,887.21 : x
  2. Step 2: Convert to fraction form
    7,081.47/10,621.35 = 1,887.21/x
  3. Step 3: Cross multiply
    7,081.47x = 10,621.35 × 1,887.21
  4. Step 4: Simplify right side
    7,081.47x = 20,044,717.93
  5. Step 5: Solve for x
    x = 20,044,717.93/7,081.47
  6. Step 6: Final answer
    x = 2,830.59

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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.