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Finding the Fourth Proportional to 2,907.40, 4,338.02 and 2,700.94

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Solution

The fourth proportional to 2,907.40, 4,338.02 and 2,700.94 is: 4,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.40 : 4,338.02 = 2,700.94 : x
  2. Step 2: Convert to fraction form
    2,907.40/4,338.02 = 2,700.94/x
  3. Step 3: Cross multiply
    2,907.40x = 4,338.02 × 2,700.94
  4. Step 4: Simplify right side
    2,907.40x = 11,716,731.74
  5. Step 5: Solve for x
    x = 11,716,731.74/2,907.40
  6. Step 6: Final answer
    x = 4,029.97

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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.