Home / 2,907.15-4,011.30-1,728.60

Finding the Fourth Proportional to 2,907.15, 4,011.30 and 1,728.60

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Solution

The fourth proportional to 2,907.15, 4,011.30 and 1,728.60 is: 2,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.15 : 4,011.30 = 1,728.60 : x
  2. Step 2: Convert to fraction form
    2,907.15/4,011.30 = 1,728.60/x
  3. Step 3: Cross multiply
    2,907.15x = 4,011.30 × 1,728.60
  4. Step 4: Simplify right side
    2,907.15x = 6,933,933.18
  5. Step 5: Solve for x
    x = 6,933,933.18/2,907.15
  6. Step 6: Final answer
    x = 2,385.13

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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.