Home / 1,719.23-2,370.87-1,278.18

Finding the Fourth Proportional to 1,719.23, 2,370.87 and 1,278.18

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Solution

The fourth proportional to 1,719.23, 2,370.87 and 1,278.18 is: 1,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.23 : 2,370.87 = 1,278.18 : x
  2. Step 2: Convert to fraction form
    1,719.23/2,370.87 = 1,278.18/x
  3. Step 3: Cross multiply
    1,719.23x = 2,370.87 × 1,278.18
  4. Step 4: Simplify right side
    1,719.23x = 3,030,398.62
  5. Step 5: Solve for x
    x = 3,030,398.62/1,719.23
  6. Step 6: Final answer
    x = 1,762.65

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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.