Home / 8,156.40-11,255.45-4,619.64

Finding the Fourth Proportional to 8,156.40, 11,255.45 and 4,619.64

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Solution

The fourth proportional to 8,156.40, 11,255.45 and 4,619.64 is: 6,374.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.40 : 11,255.45 = 4,619.64 : x
  2. Step 2: Convert to fraction form
    8,156.40/11,255.45 = 4,619.64/x
  3. Step 3: Cross multiply
    8,156.40x = 11,255.45 × 4,619.64
  4. Step 4: Simplify right side
    8,156.40x = 51,996,127.04
  5. Step 5: Solve for x
    x = 51,996,127.04/8,156.40
  6. Step 6: Final answer
    x = 6,374.89

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1.5x scale

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.