Home / 1,988.24-2,743.91-1,490.00

Finding the Fourth Proportional to 1,988.24, 2,743.91 and 1,490.00

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Solution

The fourth proportional to 1,988.24, 2,743.91 and 1,490.00 is: 2,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.24 : 2,743.91 = 1,490.00 : x
  2. Step 2: Convert to fraction form
    1,988.24/2,743.91 = 1,490.00/x
  3. Step 3: Cross multiply
    1,988.24x = 2,743.91 × 1,490.00
  4. Step 4: Simplify right side
    1,988.24x = 4,088,410.32
  5. Step 5: Solve for x
    x = 4,088,410.32/1,988.24
  6. Step 6: Final answer
    x = 2,056.30

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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.