Home / 7,690.78-10,610.85-4,705.12

Finding the Fourth Proportional to 7,690.78, 10,610.85 and 4,705.12

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Solution

The fourth proportional to 7,690.78, 10,610.85 and 4,705.12 is: 6,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.78 : 10,610.85 = 4,705.12 : x
  2. Step 2: Convert to fraction form
    7,690.78/10,610.85 = 4,705.12/x
  3. Step 3: Cross multiply
    7,690.78x = 10,610.85 × 4,705.12
  4. Step 4: Simplify right side
    7,690.78x = 49,925,326.99
  5. Step 5: Solve for x
    x = 49,925,326.99/7,690.78
  6. Step 6: Final answer
    x = 6,491.58

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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.