Home / 1,372.36-1,895.70-1,307.56

Finding the Fourth Proportional to 1,372.36, 1,895.70 and 1,307.56

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Solution

The fourth proportional to 1,372.36, 1,895.70 and 1,307.56 is: 1,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.36 : 1,895.70 = 1,307.56 : x
  2. Step 2: Convert to fraction form
    1,372.36/1,895.70 = 1,307.56/x
  3. Step 3: Cross multiply
    1,372.36x = 1,895.70 × 1,307.56
  4. Step 4: Simplify right side
    1,372.36x = 2,478,741.49
  5. Step 5: Solve for x
    x = 2,478,741.49/1,372.36
  6. Step 6: Final answer
    x = 1,806.19

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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.