Home / 8,790.18-12,129.96-4,810.51

Finding the Fourth Proportional to 8,790.18, 12,129.96 and 4,810.51

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Solution

The fourth proportional to 8,790.18, 12,129.96 and 4,810.51 is: 6,638.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.18 : 12,129.96 = 4,810.51 : x
  2. Step 2: Convert to fraction form
    8,790.18/12,129.96 = 4,810.51/x
  3. Step 3: Cross multiply
    8,790.18x = 12,129.96 × 4,810.51
  4. Step 4: Simplify right side
    8,790.18x = 58,351,293.88
  5. Step 5: Solve for x
    x = 58,351,293.88/8,790.18
  6. Step 6: Final answer
    x = 6,638.24

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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.