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Finding the Fourth Proportional to 7,710.33, 11,565.53 and 1,866.95

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Solution

The fourth proportional to 7,710.33, 11,565.53 and 1,866.95 is: 2,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.33 : 11,565.53 = 1,866.95 : x
  2. Step 2: Convert to fraction form
    7,710.33/11,565.53 = 1,866.95/x
  3. Step 3: Cross multiply
    7,710.33x = 11,565.53 × 1,866.95
  4. Step 4: Simplify right side
    7,710.33x = 21,592,199.07
  5. Step 5: Solve for x
    x = 21,592,199.07/7,710.33
  6. Step 6: Final answer
    x = 2,800.42

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Double scale
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Similar ratio
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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.