Home / 4,331.24-6,491.74-1,989.28

Finding the Fourth Proportional to 4,331.24, 6,491.74 and 1,989.28

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Solution

The fourth proportional to 4,331.24, 6,491.74 and 1,989.28 is: 2,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,331.24 : 6,491.74 = 1,989.28 : x
  2. Step 2: Convert to fraction form
    4,331.24/6,491.74 = 1,989.28/x
  3. Step 3: Cross multiply
    4,331.24x = 6,491.74 × 1,989.28
  4. Step 4: Simplify right side
    4,331.24x = 12,913,888.55
  5. Step 5: Solve for x
    x = 12,913,888.55/4,331.24
  6. Step 6: Final answer
    x = 2,981.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.