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Finding the Fourth Proportional to 5,581.65, 7,699.28 and 4,011.87

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Solution

The fourth proportional to 5,581.65, 7,699.28 and 4,011.87 is: 5,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.65 : 7,699.28 = 4,011.87 : x
  2. Step 2: Convert to fraction form
    5,581.65/7,699.28 = 4,011.87/x
  3. Step 3: Cross multiply
    5,581.65x = 7,699.28 × 4,011.87
  4. Step 4: Simplify right side
    5,581.65x = 30,888,490.39
  5. Step 5: Solve for x
    x = 30,888,490.39/5,581.65
  6. Step 6: Final answer
    x = 5,533.94

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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.