Home / 7,929.68-11,835.50-6,870.76

Finding the Fourth Proportional to 7,929.68, 11,835.50 and 6,870.76

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Solution

The fourth proportional to 7,929.68, 11,835.50 and 6,870.76 is: 10,255.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.68 : 11,835.50 = 6,870.76 : x
  2. Step 2: Convert to fraction form
    7,929.68/11,835.50 = 6,870.76/x
  3. Step 3: Cross multiply
    7,929.68x = 11,835.50 × 6,870.76
  4. Step 4: Simplify right side
    7,929.68x = 81,318,879.98
  5. Step 5: Solve for x
    x = 81,318,879.98/7,929.68
  6. Step 6: Final answer
    x = 10,255.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.