Home / 7,780.20-11,666.88-2,848.56

Finding the Fourth Proportional to 7,780.20, 11,666.88 and 2,848.56

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Solution

The fourth proportional to 7,780.20, 11,666.88 and 2,848.56 is: 4,271.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.20 : 11,666.88 = 2,848.56 : x
  2. Step 2: Convert to fraction form
    7,780.20/11,666.88 = 2,848.56/x
  3. Step 3: Cross multiply
    7,780.20x = 11,666.88 × 2,848.56
  4. Step 4: Simplify right side
    7,780.20x = 33,233,807.69
  5. Step 5: Solve for x
    x = 33,233,807.69/7,780.20
  6. Step 6: Final answer
    x = 4,271.59

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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.