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Finding the Fourth Proportional to 1,907.80, 2,864.40 and 1,497.40

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Solution

The fourth proportional to 1,907.80, 2,864.40 and 1,497.40 is: 2,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.80 : 2,864.40 = 1,497.40 : x
  2. Step 2: Convert to fraction form
    1,907.80/2,864.40 = 1,497.40/x
  3. Step 3: Cross multiply
    1,907.80x = 2,864.40 × 1,497.40
  4. Step 4: Simplify right side
    1,907.80x = 4,289,152.56
  5. Step 5: Solve for x
    x = 4,289,152.56/1,907.80
  6. Step 6: Final answer
    x = 2,248.22

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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.