Home / 8,812.32-13,150.40-7,830.60

Finding the Fourth Proportional to 8,812.32, 13,150.40 and 7,830.60

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Solution

The fourth proportional to 8,812.32, 13,150.40 and 7,830.60 is: 11,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.32 : 13,150.40 = 7,830.60 : x
  2. Step 2: Convert to fraction form
    8,812.32/13,150.40 = 7,830.60/x
  3. Step 3: Cross multiply
    8,812.32x = 13,150.40 × 7,830.60
  4. Step 4: Simplify right side
    8,812.32x = 102,975,522.24
  5. Step 5: Solve for x
    x = 102,975,522.24/8,812.32
  6. Step 6: Final answer
    x = 11,685.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.