Home / 7,815.72-10,786.56-4,459.36

Finding the Fourth Proportional to 7,815.72, 10,786.56 and 4,459.36

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Solution

The fourth proportional to 7,815.72, 10,786.56 and 4,459.36 is: 6,154.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.72 : 10,786.56 = 4,459.36 : x
  2. Step 2: Convert to fraction form
    7,815.72/10,786.56 = 4,459.36/x
  3. Step 3: Cross multiply
    7,815.72x = 10,786.56 × 4,459.36
  4. Step 4: Simplify right side
    7,815.72x = 48,101,154.20
  5. Step 5: Solve for x
    x = 48,101,154.20/7,815.72
  6. Step 6: Final answer
    x = 6,154.41

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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.