Home / 1,682.40-2,321.04-974.10

Finding the Fourth Proportional to 1,682.40, 2,321.04 and 974.10

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Solution

The fourth proportional to 1,682.40, 2,321.04 and 974.10 is: 1,343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.40 : 2,321.04 = 974.10 : x
  2. Step 2: Convert to fraction form
    1,682.40/2,321.04 = 974.10/x
  3. Step 3: Cross multiply
    1,682.40x = 2,321.04 × 974.10
  4. Step 4: Simplify right side
    1,682.40x = 2,260,925.06
  5. Step 5: Solve for x
    x = 2,260,925.06/1,682.40
  6. Step 6: Final answer
    x = 1,343.87

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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.