Home / 8,922.87-12,312.30-5,145.48

Finding the Fourth Proportional to 8,922.87, 12,312.30 and 5,145.48

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Solution

The fourth proportional to 8,922.87, 12,312.30 and 5,145.48 is: 7,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.87 : 12,312.30 = 5,145.48 : x
  2. Step 2: Convert to fraction form
    8,922.87/12,312.30 = 5,145.48/x
  3. Step 3: Cross multiply
    8,922.87x = 12,312.30 × 5,145.48
  4. Step 4: Simplify right side
    8,922.87x = 63,352,693.40
  5. Step 5: Solve for x
    x = 63,352,693.40/8,922.87
  6. Step 6: Final answer
    x = 7,100.04

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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.