Home / 2,918.64-4,024.98-2,122.68

Finding the Fourth Proportional to 2,918.64, 4,024.98 and 2,122.68

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Solution

The fourth proportional to 2,918.64, 4,024.98 and 2,122.68 is: 2,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.64 : 4,024.98 = 2,122.68 : x
  2. Step 2: Convert to fraction form
    2,918.64/4,024.98 = 2,122.68/x
  3. Step 3: Cross multiply
    2,918.64x = 4,024.98 × 2,122.68
  4. Step 4: Simplify right side
    2,918.64x = 8,543,744.55
  5. Step 5: Solve for x
    x = 8,543,744.55/2,918.64
  6. Step 6: Final answer
    x = 2,927.30

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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.