Home / 7,844.99-10,826.56-5,187.78

Finding the Fourth Proportional to 7,844.99, 10,826.56 and 5,187.78

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Solution

The fourth proportional to 7,844.99, 10,826.56 and 5,187.78 is: 7,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,844.99 : 10,826.56 = 5,187.78 : x
  2. Step 2: Convert to fraction form
    7,844.99/10,826.56 = 5,187.78/x
  3. Step 3: Cross multiply
    7,844.99x = 10,826.56 × 5,187.78
  4. Step 4: Simplify right side
    7,844.99x = 56,165,817.92
  5. Step 5: Solve for x
    x = 56,165,817.92/7,844.99
  6. Step 6: Final answer
    x = 7,159.46

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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.