Home / 1,907.17-2,630.14-1,243.78

Finding the Fourth Proportional to 1,907.17, 2,630.14 and 1,243.78

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Solution

The fourth proportional to 1,907.17, 2,630.14 and 1,243.78 is: 1,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.17 : 2,630.14 = 1,243.78 : x
  2. Step 2: Convert to fraction form
    1,907.17/2,630.14 = 1,243.78/x
  3. Step 3: Cross multiply
    1,907.17x = 2,630.14 × 1,243.78
  4. Step 4: Simplify right side
    1,907.17x = 3,271,315.53
  5. Step 5: Solve for x
    x = 3,271,315.53/1,907.17
  6. Step 6: Final answer
    x = 1,715.27

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Double scale
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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.