Home / 1,507.06-2,270.85-1,239.15

Finding the Fourth Proportional to 1,507.06, 2,270.85 and 1,239.15

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Solution

The fourth proportional to 1,507.06, 2,270.85 and 1,239.15 is: 1,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.06 : 2,270.85 = 1,239.15 : x
  2. Step 2: Convert to fraction form
    1,507.06/2,270.85 = 1,239.15/x
  3. Step 3: Cross multiply
    1,507.06x = 2,270.85 × 1,239.15
  4. Step 4: Simplify right side
    1,507.06x = 2,813,921.84
  5. Step 5: Solve for x
    x = 2,813,921.84/1,507.06
  6. Step 6: Final answer
    x = 1,867.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.