Home / 9,415.68-12,982.80-6,433.24

Finding the Fourth Proportional to 9,415.68, 12,982.80 and 6,433.24

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Solution

The fourth proportional to 9,415.68, 12,982.80 and 6,433.24 is: 8,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.68 : 12,982.80 = 6,433.24 : x
  2. Step 2: Convert to fraction form
    9,415.68/12,982.80 = 6,433.24/x
  3. Step 3: Cross multiply
    9,415.68x = 12,982.80 × 6,433.24
  4. Step 4: Simplify right side
    9,415.68x = 83,521,468.27
  5. Step 5: Solve for x
    x = 83,521,468.27/9,415.68
  6. Step 6: Final answer
    x = 8,870.47

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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.