Home / 1,664.12-2,490.64-1,116.12

Finding the Fourth Proportional to 1,664.12, 2,490.64 and 1,116.12

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Solution

The fourth proportional to 1,664.12, 2,490.64 and 1,116.12 is: 1,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.12 : 2,490.64 = 1,116.12 : x
  2. Step 2: Convert to fraction form
    1,664.12/2,490.64 = 1,116.12/x
  3. Step 3: Cross multiply
    1,664.12x = 2,490.64 × 1,116.12
  4. Step 4: Simplify right side
    1,664.12x = 2,779,853.12
  5. Step 5: Solve for x
    x = 2,779,853.12/1,664.12
  6. Step 6: Final answer
    x = 1,670.46

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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.