Home / 1,397.19-2,096.26-877.58

Finding the Fourth Proportional to 1,397.19, 2,096.26 and 877.58

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Solution

The fourth proportional to 1,397.19, 2,096.26 and 877.58 is: 1,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.19 : 2,096.26 = 877.58 : x
  2. Step 2: Convert to fraction form
    1,397.19/2,096.26 = 877.58/x
  3. Step 3: Cross multiply
    1,397.19x = 2,096.26 × 877.58
  4. Step 4: Simplify right side
    1,397.19x = 1,839,623.18
  5. Step 5: Solve for x
    x = 1,839,623.18/1,397.19
  6. Step 6: Final answer
    x = 1,316.66

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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.