Home / 6,520.40-9,779.58-1,840.76

Finding the Fourth Proportional to 6,520.40, 9,779.58 and 1,840.76

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Solution

The fourth proportional to 6,520.40, 9,779.58 and 1,840.76 is: 2,760.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.40 : 9,779.58 = 1,840.76 : x
  2. Step 2: Convert to fraction form
    6,520.40/9,779.58 = 1,840.76/x
  3. Step 3: Cross multiply
    6,520.40x = 9,779.58 × 1,840.76
  4. Step 4: Simplify right side
    6,520.40x = 18,001,859.68
  5. Step 5: Solve for x
    x = 18,001,859.68/6,520.40
  6. Step 6: Final answer
    x = 2,760.85

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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.