Home / 1,861.42-2,569.95-1,661.91

Finding the Fourth Proportional to 1,861.42, 2,569.95 and 1,661.91

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Solution

The fourth proportional to 1,861.42, 2,569.95 and 1,661.91 is: 2,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.42 : 2,569.95 = 1,661.91 : x
  2. Step 2: Convert to fraction form
    1,861.42/2,569.95 = 1,661.91/x
  3. Step 3: Cross multiply
    1,861.42x = 2,569.95 × 1,661.91
  4. Step 4: Simplify right side
    1,861.42x = 4,271,025.60
  5. Step 5: Solve for x
    x = 4,271,025.60/1,861.42
  6. Step 6: Final answer
    x = 2,294.50

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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.