Home / 1,639.22-2,444.99-1,392.98

Finding the Fourth Proportional to 1,639.22, 2,444.99 and 1,392.98

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Solution

The fourth proportional to 1,639.22, 2,444.99 and 1,392.98 is: 2,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.22 : 2,444.99 = 1,392.98 : x
  2. Step 2: Convert to fraction form
    1,639.22/2,444.99 = 1,392.98/x
  3. Step 3: Cross multiply
    1,639.22x = 2,444.99 × 1,392.98
  4. Step 4: Simplify right side
    1,639.22x = 3,405,802.98
  5. Step 5: Solve for x
    x = 3,405,802.98/1,639.22
  6. Step 6: Final answer
    x = 2,077.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.