Home / 1,921.10-2,861.58-1,895.58

Finding the Fourth Proportional to 1,921.10, 2,861.58 and 1,895.58

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Solution

The fourth proportional to 1,921.10, 2,861.58 and 1,895.58 is: 2,823.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.10 : 2,861.58 = 1,895.58 : x
  2. Step 2: Convert to fraction form
    1,921.10/2,861.58 = 1,895.58/x
  3. Step 3: Cross multiply
    1,921.10x = 2,861.58 × 1,895.58
  4. Step 4: Simplify right side
    1,921.10x = 5,424,353.82
  5. Step 5: Solve for x
    x = 5,424,353.82/1,921.10
  6. Step 6: Final answer
    x = 2,823.57

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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.