Home / 7,412.25-11,117.55-1,865.60

Finding the Fourth Proportional to 7,412.25, 11,117.55 and 1,865.60

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Solution

The fourth proportional to 7,412.25, 11,117.55 and 1,865.60 is: 2,798.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.25 : 11,117.55 = 1,865.60 : x
  2. Step 2: Convert to fraction form
    7,412.25/11,117.55 = 1,865.60/x
  3. Step 3: Cross multiply
    7,412.25x = 11,117.55 × 1,865.60
  4. Step 4: Simplify right side
    7,412.25x = 20,740,894.38
  5. Step 5: Solve for x
    x = 20,740,894.38/7,412.25
  6. Step 6: Final answer
    x = 2,798.19

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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.