Home / 7,109.16-10,664.86-1,915.24

Finding the Fourth Proportional to 7,109.16, 10,664.86 and 1,915.24

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Solution

The fourth proportional to 7,109.16, 10,664.86 and 1,915.24 is: 2,873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.16 : 10,664.86 = 1,915.24 : x
  2. Step 2: Convert to fraction form
    7,109.16/10,664.86 = 1,915.24/x
  3. Step 3: Cross multiply
    7,109.16x = 10,664.86 × 1,915.24
  4. Step 4: Simplify right side
    7,109.16x = 20,425,766.47
  5. Step 5: Solve for x
    x = 20,425,766.47/7,109.16
  6. Step 6: Final answer
    x = 2,873.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.