Home / 1,267.21-1,901.18-651.35

Finding the Fourth Proportional to 1,267.21, 1,901.18 and 651.35

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Solution

The fourth proportional to 1,267.21, 1,901.18 and 651.35 is: 977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.21 : 1,901.18 = 651.35 : x
  2. Step 2: Convert to fraction form
    1,267.21/1,901.18 = 651.35/x
  3. Step 3: Cross multiply
    1,267.21x = 1,901.18 × 651.35
  4. Step 4: Simplify right side
    1,267.21x = 1,238,330.34
  5. Step 5: Solve for x
    x = 1,238,330.34/1,267.21
  6. Step 6: Final answer
    x = 977.21

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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.