Home / 1,509.40-2,261.70-1,264.60

Finding the Fourth Proportional to 1,509.40, 2,261.70 and 1,264.60

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Solution

The fourth proportional to 1,509.40, 2,261.70 and 1,264.60 is: 1,894.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.40 : 2,261.70 = 1,264.60 : x
  2. Step 2: Convert to fraction form
    1,509.40/2,261.70 = 1,264.60/x
  3. Step 3: Cross multiply
    1,509.40x = 2,261.70 × 1,264.60
  4. Step 4: Simplify right side
    1,509.40x = 2,860,145.82
  5. Step 5: Solve for x
    x = 2,860,145.82/1,509.40
  6. Step 6: Final answer
    x = 1,894.89

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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.