Home / 9,328.53-12,873.42-5,136.78

Finding the Fourth Proportional to 9,328.53, 12,873.42 and 5,136.78

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Solution

The fourth proportional to 9,328.53, 12,873.42 and 5,136.78 is: 7,088.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.53 : 12,873.42 = 5,136.78 : x
  2. Step 2: Convert to fraction form
    9,328.53/12,873.42 = 5,136.78/x
  3. Step 3: Cross multiply
    9,328.53x = 12,873.42 × 5,136.78
  4. Step 4: Simplify right side
    9,328.53x = 66,127,926.39
  5. Step 5: Solve for x
    x = 66,127,926.39/9,328.53
  6. Step 6: Final answer
    x = 7,088.78

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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.