Home / 1,148.25-1,584.62-624.32

Finding the Fourth Proportional to 1,148.25, 1,584.62 and 624.32

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Solution

The fourth proportional to 1,148.25, 1,584.62 and 624.32 is: 861.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.25 : 1,584.62 = 624.32 : x
  2. Step 2: Convert to fraction form
    1,148.25/1,584.62 = 624.32/x
  3. Step 3: Cross multiply
    1,148.25x = 1,584.62 × 624.32
  4. Step 4: Simplify right side
    1,148.25x = 989,303.60
  5. Step 5: Solve for x
    x = 989,303.60/1,148.25
  6. Step 6: Final answer
    x = 861.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.