Home / 1,724.40-2,384.28-1,505.70

Finding the Fourth Proportional to 1,724.40, 2,384.28 and 1,505.70

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Solution

The fourth proportional to 1,724.40, 2,384.28 and 1,505.70 is: 2,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.40 : 2,384.28 = 1,505.70 : x
  2. Step 2: Convert to fraction form
    1,724.40/2,384.28 = 1,505.70/x
  3. Step 3: Cross multiply
    1,724.40x = 2,384.28 × 1,505.70
  4. Step 4: Simplify right side
    1,724.40x = 3,590,010.40
  5. Step 5: Solve for x
    x = 3,590,010.40/1,724.40
  6. Step 6: Final answer
    x = 2,081.89

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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.