Home / 2,905.16-4,010.58-2,118.92

Finding the Fourth Proportional to 2,905.16, 4,010.58 and 2,118.92

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Solution

The fourth proportional to 2,905.16, 4,010.58 and 2,118.92 is: 2,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.16 : 4,010.58 = 2,118.92 : x
  2. Step 2: Convert to fraction form
    2,905.16/4,010.58 = 2,118.92/x
  3. Step 3: Cross multiply
    2,905.16x = 4,010.58 × 2,118.92
  4. Step 4: Simplify right side
    2,905.16x = 8,498,098.17
  5. Step 5: Solve for x
    x = 8,498,098.17/2,905.16
  6. Step 6: Final answer
    x = 2,925.17

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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.