Home / 1,639.19-2,459.78-1,054.56

Finding the Fourth Proportional to 1,639.19, 2,459.78 and 1,054.56

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Solution

The fourth proportional to 1,639.19, 2,459.78 and 1,054.56 is: 1,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.19 : 2,459.78 = 1,054.56 : x
  2. Step 2: Convert to fraction form
    1,639.19/2,459.78 = 1,054.56/x
  3. Step 3: Cross multiply
    1,639.19x = 2,459.78 × 1,054.56
  4. Step 4: Simplify right side
    1,639.19x = 2,593,980.32
  5. Step 5: Solve for x
    x = 2,593,980.32/1,639.19
  6. Step 6: Final answer
    x = 1,582.48

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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.