Home / 7,918.83-11,879.53-2,988.90

Finding the Fourth Proportional to 7,918.83, 11,879.53 and 2,988.90

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Solution

The fourth proportional to 7,918.83, 11,879.53 and 2,988.90 is: 4,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.83 : 11,879.53 = 2,988.90 : x
  2. Step 2: Convert to fraction form
    7,918.83/11,879.53 = 2,988.90/x
  3. Step 3: Cross multiply
    7,918.83x = 11,879.53 × 2,988.90
  4. Step 4: Simplify right side
    7,918.83x = 35,506,719.74
  5. Step 5: Solve for x
    x = 35,506,719.74/7,918.83
  6. Step 6: Final answer
    x = 4,483.83

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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.