Home / 7,729.60-11,594.40-3,111.52

Finding the Fourth Proportional to 7,729.60, 11,594.40 and 3,111.52

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Solution

The fourth proportional to 7,729.60, 11,594.40 and 3,111.52 is: 4,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.60 : 11,594.40 = 3,111.52 : x
  2. Step 2: Convert to fraction form
    7,729.60/11,594.40 = 3,111.52/x
  3. Step 3: Cross multiply
    7,729.60x = 11,594.40 × 3,111.52
  4. Step 4: Simplify right side
    7,729.60x = 36,076,207.49
  5. Step 5: Solve for x
    x = 36,076,207.49/7,729.60
  6. Step 6: Final answer
    x = 4,667.28

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1.5x scale

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.