Home / 7,109.24-10,663.86-1,915.52

Finding the Fourth Proportional to 7,109.24, 10,663.86 and 1,915.52

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Solution

The fourth proportional to 7,109.24, 10,663.86 and 1,915.52 is: 2,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.24 : 10,663.86 = 1,915.52 : x
  2. Step 2: Convert to fraction form
    7,109.24/10,663.86 = 1,915.52/x
  3. Step 3: Cross multiply
    7,109.24x = 10,663.86 × 1,915.52
  4. Step 4: Simplify right side
    7,109.24x = 20,426,837.11
  5. Step 5: Solve for x
    x = 20,426,837.11/7,109.24
  6. Step 6: Final answer
    x = 2,873.28

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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.