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Finding the Fourth Proportional to 9,045.66, 13,556.16 and 8,779.68

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Solution

The fourth proportional to 9,045.66, 13,556.16 and 8,779.68 is: 13,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,045.66 : 13,556.16 = 8,779.68 : x
  2. Step 2: Convert to fraction form
    9,045.66/13,556.16 = 8,779.68/x
  3. Step 3: Cross multiply
    9,045.66x = 13,556.16 × 8,779.68
  4. Step 4: Simplify right side
    9,045.66x = 119,018,746.83
  5. Step 5: Solve for x
    x = 119,018,746.83/9,045.66
  6. Step 6: Final answer
    x = 13,157.55

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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.