Home / 1,890.10-2,606.64-1,292.32

Finding the Fourth Proportional to 1,890.10, 2,606.64 and 1,292.32

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Solution

The fourth proportional to 1,890.10, 2,606.64 and 1,292.32 is: 1,782.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.10 : 2,606.64 = 1,292.32 : x
  2. Step 2: Convert to fraction form
    1,890.10/2,606.64 = 1,292.32/x
  3. Step 3: Cross multiply
    1,890.10x = 2,606.64 × 1,292.32
  4. Step 4: Simplify right side
    1,890.10x = 3,368,613.00
  5. Step 5: Solve for x
    x = 3,368,613.00/1,890.10
  6. Step 6: Final answer
    x = 1,782.24

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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.