Home / 2,890.54-4,319.96-2,112.18

Finding the Fourth Proportional to 2,890.54, 4,319.96 and 2,112.18

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Solution

The fourth proportional to 2,890.54, 4,319.96 and 2,112.18 is: 3,156.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.54 : 4,319.96 = 2,112.18 : x
  2. Step 2: Convert to fraction form
    2,890.54/4,319.96 = 2,112.18/x
  3. Step 3: Cross multiply
    2,890.54x = 4,319.96 × 2,112.18
  4. Step 4: Simplify right side
    2,890.54x = 9,124,533.11
  5. Step 5: Solve for x
    x = 9,124,533.11/2,890.54
  6. Step 6: Final answer
    x = 3,156.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.