Home / 1,968.56-2,715.08-1,305.16

Finding the Fourth Proportional to 1,968.56, 2,715.08 and 1,305.16

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Solution

The fourth proportional to 1,968.56, 2,715.08 and 1,305.16 is: 1,800.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.56 : 2,715.08 = 1,305.16 : x
  2. Step 2: Convert to fraction form
    1,968.56/2,715.08 = 1,305.16/x
  3. Step 3: Cross multiply
    1,968.56x = 2,715.08 × 1,305.16
  4. Step 4: Simplify right side
    1,968.56x = 3,543,613.81
  5. Step 5: Solve for x
    x = 3,543,613.81/1,968.56
  6. Step 6: Final answer
    x = 1,800.10

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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.