Home / 1,238.02-1,864.36-1,077.64

Finding the Fourth Proportional to 1,238.02, 1,864.36 and 1,077.64

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Solution

The fourth proportional to 1,238.02, 1,864.36 and 1,077.64 is: 1,622.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.02 : 1,864.36 = 1,077.64 : x
  2. Step 2: Convert to fraction form
    1,238.02/1,864.36 = 1,077.64/x
  3. Step 3: Cross multiply
    1,238.02x = 1,864.36 × 1,077.64
  4. Step 4: Simplify right side
    1,238.02x = 2,009,108.91
  5. Step 5: Solve for x
    x = 2,009,108.91/1,238.02
  6. Step 6: Final answer
    x = 1,622.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.