Home / 8,345.10-11,515.89-4,807.62

Finding the Fourth Proportional to 8,345.10, 11,515.89 and 4,807.62

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Solution

The fourth proportional to 8,345.10, 11,515.89 and 4,807.62 is: 6,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.10 : 11,515.89 = 4,807.62 : x
  2. Step 2: Convert to fraction form
    8,345.10/11,515.89 = 4,807.62/x
  3. Step 3: Cross multiply
    8,345.10x = 11,515.89 × 4,807.62
  4. Step 4: Simplify right side
    8,345.10x = 55,364,023.08
  5. Step 5: Solve for x
    x = 55,364,023.08/8,345.10
  6. Step 6: Final answer
    x = 6,634.32

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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.