Home / 8,221.64-11,345.81-4,684.80

Finding the Fourth Proportional to 8,221.64, 11,345.81 and 4,684.80

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Solution

The fourth proportional to 8,221.64, 11,345.81 and 4,684.80 is: 6,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.64 : 11,345.81 = 4,684.80 : x
  2. Step 2: Convert to fraction form
    8,221.64/11,345.81 = 4,684.80/x
  3. Step 3: Cross multiply
    8,221.64x = 11,345.81 × 4,684.80
  4. Step 4: Simplify right side
    8,221.64x = 53,152,869.81
  5. Step 5: Solve for x
    x = 53,152,869.81/8,221.64
  6. Step 6: Final answer
    x = 6,465.00

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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.