Home / 9,378.16-12,941.70-5,186.38

Finding the Fourth Proportional to 9,378.16, 12,941.70 and 5,186.38

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Solution

The fourth proportional to 9,378.16, 12,941.70 and 5,186.38 is: 7,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.16 : 12,941.70 = 5,186.38 : x
  2. Step 2: Convert to fraction form
    9,378.16/12,941.70 = 5,186.38/x
  3. Step 3: Cross multiply
    9,378.16x = 12,941.70 × 5,186.38
  4. Step 4: Simplify right side
    9,378.16x = 67,120,574.05
  5. Step 5: Solve for x
    x = 67,120,574.05/9,378.16
  6. Step 6: Final answer
    x = 7,157.12

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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.