Home / 7,754.47-11,631.74-1,911.13

Finding the Fourth Proportional to 7,754.47, 11,631.74 and 1,911.13

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Solution

The fourth proportional to 7,754.47, 11,631.74 and 1,911.13 is: 2,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,754.47 : 11,631.74 = 1,911.13 : x
  2. Step 2: Convert to fraction form
    7,754.47/11,631.74 = 1,911.13/x
  3. Step 3: Cross multiply
    7,754.47x = 11,631.74 × 1,911.13
  4. Step 4: Simplify right side
    7,754.47x = 22,229,728.63
  5. Step 5: Solve for x
    x = 22,229,728.63/7,754.47
  6. Step 6: Final answer
    x = 2,866.70

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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.