Home / 8,001.58-11,985.51-5,215.89

Finding the Fourth Proportional to 8,001.58, 11,985.51 and 5,215.89

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Solution

The fourth proportional to 8,001.58, 11,985.51 and 5,215.89 is: 7,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.58 : 11,985.51 = 5,215.89 : x
  2. Step 2: Convert to fraction form
    8,001.58/11,985.51 = 5,215.89/x
  3. Step 3: Cross multiply
    8,001.58x = 11,985.51 × 5,215.89
  4. Step 4: Simplify right side
    8,001.58x = 62,515,101.75
  5. Step 5: Solve for x
    x = 62,515,101.75/8,001.58
  6. Step 6: Final answer
    x = 7,812.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.