Home / 3,724.99-5,139.35-2,153.18

Finding the Fourth Proportional to 3,724.99, 5,139.35 and 2,153.18

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Solution

The fourth proportional to 3,724.99, 5,139.35 and 2,153.18 is: 2,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.99 : 5,139.35 = 2,153.18 : x
  2. Step 2: Convert to fraction form
    3,724.99/5,139.35 = 2,153.18/x
  3. Step 3: Cross multiply
    3,724.99x = 5,139.35 × 2,153.18
  4. Step 4: Simplify right side
    3,724.99x = 11,065,955.79
  5. Step 5: Solve for x
    x = 11,065,955.79/3,724.99
  6. Step 6: Final answer
    x = 2,970.74

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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.