Home / 7,860.87-11,780.55-4,345.66

Finding the Fourth Proportional to 7,860.87, 11,780.55 and 4,345.66

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Solution

The fourth proportional to 7,860.87, 11,780.55 and 4,345.66 is: 6,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.87 : 11,780.55 = 4,345.66 : x
  2. Step 2: Convert to fraction form
    7,860.87/11,780.55 = 4,345.66/x
  3. Step 3: Cross multiply
    7,860.87x = 11,780.55 × 4,345.66
  4. Step 4: Simplify right side
    7,860.87x = 51,194,264.91
  5. Step 5: Solve for x
    x = 51,194,264.91/7,860.87
  6. Step 6: Final answer
    x = 6,512.54

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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.