Home / 1,515.91-2,090.01-983.87

Finding the Fourth Proportional to 1,515.91, 2,090.01 and 983.87

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Solution

The fourth proportional to 1,515.91, 2,090.01 and 983.87 is: 1,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.91 : 2,090.01 = 983.87 : x
  2. Step 2: Convert to fraction form
    1,515.91/2,090.01 = 983.87/x
  3. Step 3: Cross multiply
    1,515.91x = 2,090.01 × 983.87
  4. Step 4: Simplify right side
    1,515.91x = 2,056,298.14
  5. Step 5: Solve for x
    x = 2,056,298.14/1,515.91
  6. Step 6: Final answer
    x = 1,356.48

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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.