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Finding the Fourth Proportional to 5,798.18, 7,988.97 and 3,931.94

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Solution

The fourth proportional to 5,798.18, 7,988.97 and 3,931.94 is: 5,417.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,798.18 : 7,988.97 = 3,931.94 : x
  2. Step 2: Convert to fraction form
    5,798.18/7,988.97 = 3,931.94/x
  3. Step 3: Cross multiply
    5,798.18x = 7,988.97 × 3,931.94
  4. Step 4: Simplify right side
    5,798.18x = 31,412,150.70
  5. Step 5: Solve for x
    x = 31,412,150.70/5,798.18
  6. Step 6: Final answer
    x = 5,417.59

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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.