Home / 3,147.02-4,342.16-1,820.68

Finding the Fourth Proportional to 3,147.02, 4,342.16 and 1,820.68

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Solution

The fourth proportional to 3,147.02, 4,342.16 and 1,820.68 is: 2,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.02 : 4,342.16 = 1,820.68 : x
  2. Step 2: Convert to fraction form
    3,147.02/4,342.16 = 1,820.68/x
  3. Step 3: Cross multiply
    3,147.02x = 4,342.16 × 1,820.68
  4. Step 4: Simplify right side
    3,147.02x = 7,905,683.87
  5. Step 5: Solve for x
    x = 7,905,683.87/3,147.02
  6. Step 6: Final answer
    x = 2,512.12

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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.