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Finding the Fourth Proportional to 7,751.79, 10,697.17 and 4,215.01

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Solution

The fourth proportional to 7,751.79, 10,697.17 and 4,215.01 is: 5,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.79 : 10,697.17 = 4,215.01 : x
  2. Step 2: Convert to fraction form
    7,751.79/10,697.17 = 4,215.01/x
  3. Step 3: Cross multiply
    7,751.79x = 10,697.17 × 4,215.01
  4. Step 4: Simplify right side
    7,751.79x = 45,088,678.52
  5. Step 5: Solve for x
    x = 45,088,678.52/7,751.79
  6. Step 6: Final answer
    x = 5,816.55

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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.