Home / 1,298.16-1,792.32-949.68

Finding the Fourth Proportional to 1,298.16, 1,792.32 and 949.68

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Solution

The fourth proportional to 1,298.16, 1,792.32 and 949.68 is: 1,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.16 : 1,792.32 = 949.68 : x
  2. Step 2: Convert to fraction form
    1,298.16/1,792.32 = 949.68/x
  3. Step 3: Cross multiply
    1,298.16x = 1,792.32 × 949.68
  4. Step 4: Simplify right side
    1,298.16x = 1,702,130.46
  5. Step 5: Solve for x
    x = 1,702,130.46/1,298.16
  6. Step 6: Final answer
    x = 1,311.19

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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.