Home / 1,422.36-1,973.16-1,373.76

Finding the Fourth Proportional to 1,422.36, 1,973.16 and 1,373.76

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Solution

The fourth proportional to 1,422.36, 1,973.16 and 1,373.76 is: 1,905.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.36 : 1,973.16 = 1,373.76 : x
  2. Step 2: Convert to fraction form
    1,422.36/1,973.16 = 1,373.76/x
  3. Step 3: Cross multiply
    1,422.36x = 1,973.16 × 1,373.76
  4. Step 4: Simplify right side
    1,422.36x = 2,710,648.28
  5. Step 5: Solve for x
    x = 2,710,648.28/1,422.36
  6. Step 6: Final answer
    x = 1,905.74

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.