Home / 7,918.48-11,865.40-2,985.42

Finding the Fourth Proportional to 7,918.48, 11,865.40 and 2,985.42

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Solution

The fourth proportional to 7,918.48, 11,865.40 and 2,985.42 is: 4,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.48 : 11,865.40 = 2,985.42 : x
  2. Step 2: Convert to fraction form
    7,918.48/11,865.40 = 2,985.42/x
  3. Step 3: Cross multiply
    7,918.48x = 11,865.40 × 2,985.42
  4. Step 4: Simplify right side
    7,918.48x = 35,423,195.00
  5. Step 5: Solve for x
    x = 35,423,195.00/7,918.48
  6. Step 6: Final answer
    x = 4,473.49

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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.