Home / 1,437.15-2,155.35-512.60

Finding the Fourth Proportional to 1,437.15, 2,155.35 and 512.60

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Solution

The fourth proportional to 1,437.15, 2,155.35 and 512.60 is: 768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.15 : 2,155.35 = 512.60 : x
  2. Step 2: Convert to fraction form
    1,437.15/2,155.35 = 512.60/x
  3. Step 3: Cross multiply
    1,437.15x = 2,155.35 × 512.60
  4. Step 4: Simplify right side
    1,437.15x = 1,104,832.41
  5. Step 5: Solve for x
    x = 1,104,832.41/1,437.15
  6. Step 6: Final answer
    x = 768.77

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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.