Home / 1,719.42-2,580.30-939.36

Finding the Fourth Proportional to 1,719.42, 2,580.30 and 939.36

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Solution

The fourth proportional to 1,719.42, 2,580.30 and 939.36 is: 1,409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.42 : 2,580.30 = 939.36 : x
  2. Step 2: Convert to fraction form
    1,719.42/2,580.30 = 939.36/x
  3. Step 3: Cross multiply
    1,719.42x = 2,580.30 × 939.36
  4. Step 4: Simplify right side
    1,719.42x = 2,423,830.61
  5. Step 5: Solve for x
    x = 2,423,830.61/1,719.42
  6. Step 6: Final answer
    x = 1,409.68

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1.5x scale

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.