Home / 1,402.16-1,932.68-1,188.32

Finding the Fourth Proportional to 1,402.16, 1,932.68 and 1,188.32

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Solution

The fourth proportional to 1,402.16, 1,932.68 and 1,188.32 is: 1,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.16 : 1,932.68 = 1,188.32 : x
  2. Step 2: Convert to fraction form
    1,402.16/1,932.68 = 1,188.32/x
  3. Step 3: Cross multiply
    1,402.16x = 1,932.68 × 1,188.32
  4. Step 4: Simplify right side
    1,402.16x = 2,296,642.30
  5. Step 5: Solve for x
    x = 2,296,642.30/1,402.16
  6. Step 6: Final answer
    x = 1,637.93

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1.5x scale

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.