Home / 1,426.77-2,140.95-696.35

Finding the Fourth Proportional to 1,426.77, 2,140.95 and 696.35

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Solution

The fourth proportional to 1,426.77, 2,140.95 and 696.35 is: 1,044.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.77 : 2,140.95 = 696.35 : x
  2. Step 2: Convert to fraction form
    1,426.77/2,140.95 = 696.35/x
  3. Step 3: Cross multiply
    1,426.77x = 2,140.95 × 696.35
  4. Step 4: Simplify right side
    1,426.77x = 1,490,850.53
  5. Step 5: Solve for x
    x = 1,490,850.53/1,426.77
  6. Step 6: Final answer
    x = 1,044.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.