Home / 1,719.80-2,374.76-1,279.66

Finding the Fourth Proportional to 1,719.80, 2,374.76 and 1,279.66

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Solution

The fourth proportional to 1,719.80, 2,374.76 and 1,279.66 is: 1,767.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.80 : 2,374.76 = 1,279.66 : x
  2. Step 2: Convert to fraction form
    1,719.80/2,374.76 = 1,279.66/x
  3. Step 3: Cross multiply
    1,719.80x = 2,374.76 × 1,279.66
  4. Step 4: Simplify right side
    1,719.80x = 3,038,885.38
  5. Step 5: Solve for x
    x = 3,038,885.38/1,719.80
  6. Step 6: Final answer
    x = 1,767.00

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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.