Home / 8,345.12-11,515.56-4,807.76

Finding the Fourth Proportional to 8,345.12, 11,515.56 and 4,807.76

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Solution

The fourth proportional to 8,345.12, 11,515.56 and 4,807.76 is: 6,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.12 : 11,515.56 = 4,807.76 : x
  2. Step 2: Convert to fraction form
    8,345.12/11,515.56 = 4,807.76/x
  3. Step 3: Cross multiply
    8,345.12x = 11,515.56 × 4,807.76
  4. Step 4: Simplify right side
    8,345.12x = 55,364,048.75
  5. Step 5: Solve for x
    x = 55,364,048.75/8,345.12
  6. Step 6: Final answer
    x = 6,634.30

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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.