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Finding the Fourth Proportional to 1,975.12, 2,962.95 and 725.77

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Solution

The fourth proportional to 1,975.12, 2,962.95 and 725.77 is: 1,088.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.12 : 2,962.95 = 725.77 : x
  2. Step 2: Convert to fraction form
    1,975.12/2,962.95 = 725.77/x
  3. Step 3: Cross multiply
    1,975.12x = 2,962.95 × 725.77
  4. Step 4: Simplify right side
    1,975.12x = 2,150,420.22
  5. Step 5: Solve for x
    x = 2,150,420.22/1,975.12
  6. Step 6: Final answer
    x = 1,088.75

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1.5x scale

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.