Home / 5,113.42-7,056.78-2,875.66

Finding the Fourth Proportional to 5,113.42, 7,056.78 and 2,875.66

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Solution

The fourth proportional to 5,113.42, 7,056.78 and 2,875.66 is: 3,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.42 : 7,056.78 = 2,875.66 : x
  2. Step 2: Convert to fraction form
    5,113.42/7,056.78 = 2,875.66/x
  3. Step 3: Cross multiply
    5,113.42x = 7,056.78 × 2,875.66
  4. Step 4: Simplify right side
    5,113.42x = 20,292,899.97
  5. Step 5: Solve for x
    x = 20,292,899.97/5,113.42
  6. Step 6: Final answer
    x = 3,968.56

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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.