Home / 7,147.34-10,721.29-1,953.20

Finding the Fourth Proportional to 7,147.34, 10,721.29 and 1,953.20

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Solution

The fourth proportional to 7,147.34, 10,721.29 and 1,953.20 is: 2,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.34 : 10,721.29 = 1,953.20 : x
  2. Step 2: Convert to fraction form
    7,147.34/10,721.29 = 1,953.20/x
  3. Step 3: Cross multiply
    7,147.34x = 10,721.29 × 1,953.20
  4. Step 4: Simplify right side
    7,147.34x = 20,940,823.63
  5. Step 5: Solve for x
    x = 20,940,823.63/7,147.34
  6. Step 6: Final answer
    x = 2,929.88

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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.