Home / 1,317.03-1,972.80-624.30

Finding the Fourth Proportional to 1,317.03, 1,972.80 and 624.30

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Solution

The fourth proportional to 1,317.03, 1,972.80 and 624.30 is: 935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.03 : 1,972.80 = 624.30 : x
  2. Step 2: Convert to fraction form
    1,317.03/1,972.80 = 624.30/x
  3. Step 3: Cross multiply
    1,317.03x = 1,972.80 × 624.30
  4. Step 4: Simplify right side
    1,317.03x = 1,231,619.04
  5. Step 5: Solve for x
    x = 1,231,619.04/1,317.03
  6. Step 6: Final answer
    x = 935.15

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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.