Home / 1,509.86-2,083.66-985.60

Finding the Fourth Proportional to 1,509.86, 2,083.66 and 985.60

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Solution

The fourth proportional to 1,509.86, 2,083.66 and 985.60 is: 1,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.86 : 2,083.66 = 985.60 : x
  2. Step 2: Convert to fraction form
    1,509.86/2,083.66 = 985.60/x
  3. Step 3: Cross multiply
    1,509.86x = 2,083.66 × 985.60
  4. Step 4: Simplify right side
    1,509.86x = 2,053,655.30
  5. Step 5: Solve for x
    x = 2,053,655.30/1,509.86
  6. Step 6: Final answer
    x = 1,360.16

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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.