Home / 1,680.99-2,319.89-973.07

Finding the Fourth Proportional to 1,680.99, 2,319.89 and 973.07

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Solution

The fourth proportional to 1,680.99, 2,319.89 and 973.07 is: 1,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.99 : 2,319.89 = 973.07 : x
  2. Step 2: Convert to fraction form
    1,680.99/2,319.89 = 973.07/x
  3. Step 3: Cross multiply
    1,680.99x = 2,319.89 × 973.07
  4. Step 4: Simplify right side
    1,680.99x = 2,257,398.90
  5. Step 5: Solve for x
    x = 2,257,398.90/1,680.99
  6. Step 6: Final answer
    x = 1,342.90

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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.