Home / 1,680.21-2,317.99-1,148.23

Finding the Fourth Proportional to 1,680.21, 2,317.99 and 1,148.23

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Solution

The fourth proportional to 1,680.21, 2,317.99 and 1,148.23 is: 1,584.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.21 : 2,317.99 = 1,148.23 : x
  2. Step 2: Convert to fraction form
    1,680.21/2,317.99 = 1,148.23/x
  3. Step 3: Cross multiply
    1,680.21x = 2,317.99 × 1,148.23
  4. Step 4: Simplify right side
    1,680.21x = 2,661,587.84
  5. Step 5: Solve for x
    x = 2,661,587.84/1,680.21
  6. Step 6: Final answer
    x = 1,584.08

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1.5x scale

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.