Home / 1,970.12-2,717.25-1,270.28

Finding the Fourth Proportional to 1,970.12, 2,717.25 and 1,270.28

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Solution

The fourth proportional to 1,970.12, 2,717.25 and 1,270.28 is: 1,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.12 : 2,717.25 = 1,270.28 : x
  2. Step 2: Convert to fraction form
    1,970.12/2,717.25 = 1,270.28/x
  3. Step 3: Cross multiply
    1,970.12x = 2,717.25 × 1,270.28
  4. Step 4: Simplify right side
    1,970.12x = 3,451,670.36
  5. Step 5: Solve for x
    x = 3,451,670.36/1,970.12
  6. Step 6: Final answer
    x = 1,752.01

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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.