Home / 8,464.23-11,686.41-5,278.77

Finding the Fourth Proportional to 8,464.23, 11,686.41 and 5,278.77

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Solution

The fourth proportional to 8,464.23, 11,686.41 and 5,278.77 is: 7,288.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,464.23 : 11,686.41 = 5,278.77 : x
  2. Step 2: Convert to fraction form
    8,464.23/11,686.41 = 5,278.77/x
  3. Step 3: Cross multiply
    8,464.23x = 11,686.41 × 5,278.77
  4. Step 4: Simplify right side
    8,464.23x = 61,689,870.52
  5. Step 5: Solve for x
    x = 61,689,870.52/8,464.23
  6. Step 6: Final answer
    x = 7,288.30

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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.