Home / 1,318.19-1,977.53-624.92

Finding the Fourth Proportional to 1,318.19, 1,977.53 and 624.92

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Solution

The fourth proportional to 1,318.19, 1,977.53 and 624.92 is: 937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.19 : 1,977.53 = 624.92 : x
  2. Step 2: Convert to fraction form
    1,318.19/1,977.53 = 624.92/x
  3. Step 3: Cross multiply
    1,318.19x = 1,977.53 × 624.92
  4. Step 4: Simplify right side
    1,318.19x = 1,235,799.87
  5. Step 5: Solve for x
    x = 1,235,799.87/1,318.19
  6. Step 6: Final answer
    x = 937.50

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1.5x scale

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.