Home / 7,342.78-10,130.56-4,155.70

Finding the Fourth Proportional to 7,342.78, 10,130.56 and 4,155.70

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Solution

The fourth proportional to 7,342.78, 10,130.56 and 4,155.70 is: 5,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.78 : 10,130.56 = 4,155.70 : x
  2. Step 2: Convert to fraction form
    7,342.78/10,130.56 = 4,155.70/x
  3. Step 3: Cross multiply
    7,342.78x = 10,130.56 × 4,155.70
  4. Step 4: Simplify right side
    7,342.78x = 42,099,568.19
  5. Step 5: Solve for x
    x = 42,099,568.19/7,342.78
  6. Step 6: Final answer
    x = 5,733.46

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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.