Home / 8,619.96-11,897.28-5,630.40

Finding the Fourth Proportional to 8,619.96, 11,897.28 and 5,630.40

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Solution

The fourth proportional to 8,619.96, 11,897.28 and 5,630.40 is: 7,771.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.96 : 11,897.28 = 5,630.40 : x
  2. Step 2: Convert to fraction form
    8,619.96/11,897.28 = 5,630.40/x
  3. Step 3: Cross multiply
    8,619.96x = 11,897.28 × 5,630.40
  4. Step 4: Simplify right side
    8,619.96x = 66,986,445.31
  5. Step 5: Solve for x
    x = 66,986,445.31/8,619.96
  6. Step 6: Final answer
    x = 7,771.09

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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.