Home / 3,486.74-4,812.63-2,159.72

Finding the Fourth Proportional to 3,486.74, 4,812.63 and 2,159.72

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Solution

The fourth proportional to 3,486.74, 4,812.63 and 2,159.72 is: 2,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.74 : 4,812.63 = 2,159.72 : x
  2. Step 2: Convert to fraction form
    3,486.74/4,812.63 = 2,159.72/x
  3. Step 3: Cross multiply
    3,486.74x = 4,812.63 × 2,159.72
  4. Step 4: Simplify right side
    3,486.74x = 10,393,909.20
  5. Step 5: Solve for x
    x = 10,393,909.20/3,486.74
  6. Step 6: Final answer
    x = 2,980.99

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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.