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Finding the Fourth Proportional to 2,907.84, 4,012.88 and 1,712.64

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Solution

The fourth proportional to 2,907.84, 4,012.88 and 1,712.64 is: 2,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.84 : 4,012.88 = 1,712.64 : x
  2. Step 2: Convert to fraction form
    2,907.84/4,012.88 = 1,712.64/x
  3. Step 3: Cross multiply
    2,907.84x = 4,012.88 × 1,712.64
  4. Step 4: Simplify right side
    2,907.84x = 6,872,618.80
  5. Step 5: Solve for x
    x = 6,872,618.80/2,907.84
  6. Step 6: Final answer
    x = 2,363.48

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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.