Home / 3,129.26-4,315.02-2,637.32

Finding the Fourth Proportional to 3,129.26, 4,315.02 and 2,637.32

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Solution

The fourth proportional to 3,129.26, 4,315.02 and 2,637.32 is: 3,636.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.26 : 4,315.02 = 2,637.32 : x
  2. Step 2: Convert to fraction form
    3,129.26/4,315.02 = 2,637.32/x
  3. Step 3: Cross multiply
    3,129.26x = 4,315.02 × 2,637.32
  4. Step 4: Simplify right side
    3,129.26x = 11,380,088.55
  5. Step 5: Solve for x
    x = 11,380,088.55/3,129.26
  6. Step 6: Final answer
    x = 3,636.67

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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.