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Finding the Fourth Proportional to 8,559.60, 11,805.93 and 5,412.75

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Solution

The fourth proportional to 8,559.60, 11,805.93 and 5,412.75 is: 7,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.60 : 11,805.93 = 5,412.75 : x
  2. Step 2: Convert to fraction form
    8,559.60/11,805.93 = 5,412.75/x
  3. Step 3: Cross multiply
    8,559.60x = 11,805.93 × 5,412.75
  4. Step 4: Simplify right side
    8,559.60x = 63,902,547.61
  5. Step 5: Solve for x
    x = 63,902,547.61/8,559.60
  6. Step 6: Final answer
    x = 7,465.60

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Half scale
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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.