Home / 5,802.72-8,011.38-3,988.86

Finding the Fourth Proportional to 5,802.72, 8,011.38 and 3,988.86

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Solution

The fourth proportional to 5,802.72, 8,011.38 and 3,988.86 is: 5,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,802.72 : 8,011.38 = 3,988.86 : x
  2. Step 2: Convert to fraction form
    5,802.72/8,011.38 = 3,988.86/x
  3. Step 3: Cross multiply
    5,802.72x = 8,011.38 × 3,988.86
  4. Step 4: Simplify right side
    5,802.72x = 31,956,273.23
  5. Step 5: Solve for x
    x = 31,956,273.23/5,802.72
  6. Step 6: Final answer
    x = 5,507.12

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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.