Home / 7,911.95-10,917.72-4,375.08

Finding the Fourth Proportional to 7,911.95, 10,917.72 and 4,375.08

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Solution

The fourth proportional to 7,911.95, 10,917.72 and 4,375.08 is: 6,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.95 : 10,917.72 = 4,375.08 : x
  2. Step 2: Convert to fraction form
    7,911.95/10,917.72 = 4,375.08/x
  3. Step 3: Cross multiply
    7,911.95x = 10,917.72 × 4,375.08
  4. Step 4: Simplify right side
    7,911.95x = 47,765,898.42
  5. Step 5: Solve for x
    x = 47,765,898.42/7,911.95
  6. Step 6: Final answer
    x = 6,037.19

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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.