Home / 1,681.10-2,319.73-1,017.80

Finding the Fourth Proportional to 1,681.10, 2,319.73 and 1,017.80

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Solution

The fourth proportional to 1,681.10, 2,319.73 and 1,017.80 is: 1,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.10 : 2,319.73 = 1,017.80 : x
  2. Step 2: Convert to fraction form
    1,681.10/2,319.73 = 1,017.80/x
  3. Step 3: Cross multiply
    1,681.10x = 2,319.73 × 1,017.80
  4. Step 4: Simplify right side
    1,681.10x = 2,361,007.05
  5. Step 5: Solve for x
    x = 2,361,007.05/1,681.10
  6. Step 6: Final answer
    x = 1,404.45

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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.