Home / 9,368.28-12,928.08-5,176.56

Finding the Fourth Proportional to 9,368.28, 12,928.08 and 5,176.56

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Solution

The fourth proportional to 9,368.28, 12,928.08 and 5,176.56 is: 7,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.28 : 12,928.08 = 5,176.56 : x
  2. Step 2: Convert to fraction form
    9,368.28/12,928.08 = 5,176.56/x
  3. Step 3: Cross multiply
    9,368.28x = 12,928.08 × 5,176.56
  4. Step 4: Simplify right side
    9,368.28x = 66,922,981.80
  5. Step 5: Solve for x
    x = 66,922,981.80/9,368.28
  6. Step 6: Final answer
    x = 7,143.57

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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.