Home / 1,730.07-2,387.55-983.90

Finding the Fourth Proportional to 1,730.07, 2,387.55 and 983.90

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Solution

The fourth proportional to 1,730.07, 2,387.55 and 983.90 is: 1,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.07 : 2,387.55 = 983.90 : x
  2. Step 2: Convert to fraction form
    1,730.07/2,387.55 = 983.90/x
  3. Step 3: Cross multiply
    1,730.07x = 2,387.55 × 983.90
  4. Step 4: Simplify right side
    1,730.07x = 2,349,102.20
  5. Step 5: Solve for x
    x = 2,349,102.20/1,730.07
  6. Step 6: Final answer
    x = 1,357.80

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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.