Home / 9,317.02-12,857.80-5,338.90

Finding the Fourth Proportional to 9,317.02, 12,857.80 and 5,338.90

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Solution

The fourth proportional to 9,317.02, 12,857.80 and 5,338.90 is: 7,367.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,317.02 : 12,857.80 = 5,338.90 : x
  2. Step 2: Convert to fraction form
    9,317.02/12,857.80 = 5,338.90/x
  3. Step 3: Cross multiply
    9,317.02x = 12,857.80 × 5,338.90
  4. Step 4: Simplify right side
    9,317.02x = 68,646,508.42
  5. Step 5: Solve for x
    x = 68,646,508.42/9,317.02
  6. Step 6: Final answer
    x = 7,367.86

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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.