Home / 3,128,287.72-4,319,126.82-2,109,320.68

Finding the Fourth Proportional to 3,128,287.72, 4,319,126.82 and 2,109,320.68

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Solution

The fourth proportional to 3,128,287.72, 4,319,126.82 and 2,109,320.68 is: 2,912,271.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,287.72 : 4,319,126.82 = 2,109,320.68 : x
  2. Step 2: Convert to fraction form
    3,128,287.72/4,319,126.82 = 2,109,320.68/x
  3. Step 3: Cross multiply
    3,128,287.72x = 4,319,126.82 × 2,109,320.68
  4. Step 4: Simplify right side
    3,128,287.72x = 9,110,423,520,968.64
  5. Step 5: Solve for x
    x = 9,110,423,520,968.64/3,128,287.72
  6. Step 6: Final answer
    x = 2,912,271.61

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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.