Home / 7,314.78-10,094.40-4,128.75

Finding the Fourth Proportional to 7,314.78, 10,094.40 and 4,128.75

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Solution

The fourth proportional to 7,314.78, 10,094.40 and 4,128.75 is: 5,697.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314.78 : 10,094.40 = 4,128.75 : x
  2. Step 2: Convert to fraction form
    7,314.78/10,094.40 = 4,128.75/x
  3. Step 3: Cross multiply
    7,314.78x = 10,094.40 × 4,128.75
  4. Step 4: Simplify right side
    7,314.78x = 41,677,254
  5. Step 5: Solve for x
    x = 41,677,254/7,314.78
  6. Step 6: Final answer
    x = 5,697.68

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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.