Home / 1,680.39-2,518.53-948.45

Finding the Fourth Proportional to 1,680.39, 2,518.53 and 948.45

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Solution

The fourth proportional to 1,680.39, 2,518.53 and 948.45 is: 1,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.39 : 2,518.53 = 948.45 : x
  2. Step 2: Convert to fraction form
    1,680.39/2,518.53 = 948.45/x
  3. Step 3: Cross multiply
    1,680.39x = 2,518.53 × 948.45
  4. Step 4: Simplify right side
    1,680.39x = 2,388,696.22
  5. Step 5: Solve for x
    x = 2,388,696.22/1,680.39
  6. Step 6: Final answer
    x = 1,421.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.