Home / 1,316.95-1,975.43-1,236.76

Finding the Fourth Proportional to 1,316.95, 1,975.43 and 1,236.76

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Solution

The fourth proportional to 1,316.95, 1,975.43 and 1,236.76 is: 1,855.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.95 : 1,975.43 = 1,236.76 : x
  2. Step 2: Convert to fraction form
    1,316.95/1,975.43 = 1,236.76/x
  3. Step 3: Cross multiply
    1,316.95x = 1,975.43 × 1,236.76
  4. Step 4: Simplify right side
    1,316.95x = 2,443,132.81
  5. Step 5: Solve for x
    x = 2,443,132.81/1,316.95
  6. Step 6: Final answer
    x = 1,855.14

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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.