Home / 3,138.70-4,341.72-2,925.94

Finding the Fourth Proportional to 3,138.70, 4,341.72 and 2,925.94

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Solution

The fourth proportional to 3,138.70, 4,341.72 and 2,925.94 is: 4,047.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.70 : 4,341.72 = 2,925.94 : x
  2. Step 2: Convert to fraction form
    3,138.70/4,341.72 = 2,925.94/x
  3. Step 3: Cross multiply
    3,138.70x = 4,341.72 × 2,925.94
  4. Step 4: Simplify right side
    3,138.70x = 12,703,612.22
  5. Step 5: Solve for x
    x = 12,703,612.22/3,138.70
  6. Step 6: Final answer
    x = 4,047.41

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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.