Home / 8,688.08-11,977.80-5,888.72

Finding the Fourth Proportional to 8,688.08, 11,977.80 and 5,888.72

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Solution

The fourth proportional to 8,688.08, 11,977.80 and 5,888.72 is: 8,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.08 : 11,977.80 = 5,888.72 : x
  2. Step 2: Convert to fraction form
    8,688.08/11,977.80 = 5,888.72/x
  3. Step 3: Cross multiply
    8,688.08x = 11,977.80 × 5,888.72
  4. Step 4: Simplify right side
    8,688.08x = 70,533,910.42
  5. Step 5: Solve for x
    x = 70,533,910.42/8,688.08
  6. Step 6: Final answer
    x = 8,118.47

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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.