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Finding the Fourth Proportional to 3,988.91, 5,507.93 and 3,568.52

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Solution

The fourth proportional to 3,988.91, 5,507.93 and 3,568.52 is: 4,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.91 : 5,507.93 = 3,568.52 : x
  2. Step 2: Convert to fraction form
    3,988.91/5,507.93 = 3,568.52/x
  3. Step 3: Cross multiply
    3,988.91x = 5,507.93 × 3,568.52
  4. Step 4: Simplify right side
    3,988.91x = 19,655,158.36
  5. Step 5: Solve for x
    x = 19,655,158.36/3,988.91
  6. Step 6: Final answer
    x = 4,927.45

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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.