Home / 3,612.96-4,984.74-2,120.40

Finding the Fourth Proportional to 3,612.96, 4,984.74 and 2,120.40

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Solution

The fourth proportional to 3,612.96, 4,984.74 and 2,120.40 is: 2,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.96 : 4,984.74 = 2,120.40 : x
  2. Step 2: Convert to fraction form
    3,612.96/4,984.74 = 2,120.40/x
  3. Step 3: Cross multiply
    3,612.96x = 4,984.74 × 2,120.40
  4. Step 4: Simplify right side
    3,612.96x = 10,569,642.70
  5. Step 5: Solve for x
    x = 10,569,642.70/3,612.96
  6. Step 6: Final answer
    x = 2,925.48

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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.