Home / 2,147.40-2,963.43-1,307.90

Finding the Fourth Proportional to 2,147.40, 2,963.43 and 1,307.90

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Solution

The fourth proportional to 2,147.40, 2,963.43 and 1,307.90 is: 1,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.40 : 2,963.43 = 1,307.90 : x
  2. Step 2: Convert to fraction form
    2,147.40/2,963.43 = 1,307.90/x
  3. Step 3: Cross multiply
    2,147.40x = 2,963.43 × 1,307.90
  4. Step 4: Simplify right side
    2,147.40x = 3,875,855.28
  5. Step 5: Solve for x
    x = 3,875,855.28/2,147.40
  6. Step 6: Final answer
    x = 1,804.91

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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.