Home / 7,811.48-10,774.40-5,575.88

Finding the Fourth Proportional to 7,811.48, 10,774.40 and 5,575.88

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Solution

The fourth proportional to 7,811.48, 10,774.40 and 5,575.88 is: 7,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.48 : 10,774.40 = 5,575.88 : x
  2. Step 2: Convert to fraction form
    7,811.48/10,774.40 = 5,575.88/x
  3. Step 3: Cross multiply
    7,811.48x = 10,774.40 × 5,575.88
  4. Step 4: Simplify right side
    7,811.48x = 60,076,761.47
  5. Step 5: Solve for x
    x = 60,076,761.47/7,811.48
  6. Step 6: Final answer
    x = 7,690.83

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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.