Home / 9,328.64-12,873.12-5,136.32

Finding the Fourth Proportional to 9,328.64, 12,873.12 and 5,136.32

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Solution

The fourth proportional to 9,328.64, 12,873.12 and 5,136.32 is: 7,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.64 : 12,873.12 = 5,136.32 : x
  2. Step 2: Convert to fraction form
    9,328.64/12,873.12 = 5,136.32/x
  3. Step 3: Cross multiply
    9,328.64x = 12,873.12 × 5,136.32
  4. Step 4: Simplify right side
    9,328.64x = 66,120,463.72
  5. Step 5: Solve for x
    x = 66,120,463.72/9,328.64
  6. Step 6: Final answer
    x = 7,087.90

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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.