Home / 7,335.35-10,122.78-3,978.27

Finding the Fourth Proportional to 7,335.35, 10,122.78 and 3,978.27

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Solution

The fourth proportional to 7,335.35, 10,122.78 and 3,978.27 is: 5,490.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.35 : 10,122.78 = 3,978.27 : x
  2. Step 2: Convert to fraction form
    7,335.35/10,122.78 = 3,978.27/x
  3. Step 3: Cross multiply
    7,335.35x = 10,122.78 × 3,978.27
  4. Step 4: Simplify right side
    7,335.35x = 40,271,151.99
  5. Step 5: Solve for x
    x = 40,271,151.99/7,335.35
  6. Step 6: Final answer
    x = 5,490.01

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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.