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Finding the Fourth Proportional to 1,507.36, 2,079.36 and 886

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Solution

The fourth proportional to 1,507.36, 2,079.36 and 886 is: 1,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.36 : 2,079.36 = 886 : x
  2. Step 2: Convert to fraction form
    1,507.36/2,079.36 = 886/x
  3. Step 3: Cross multiply
    1,507.36x = 2,079.36 × 886
  4. Step 4: Simplify right side
    1,507.36x = 1,842,312.96
  5. Step 5: Solve for x
    x = 1,842,312.96/1,507.36
  6. Step 6: Final answer
    x = 1,222.21

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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.