Home / 8,130.35-11,219.71-4,545.29

Finding the Fourth Proportional to 8,130.35, 11,219.71 and 4,545.29

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Solution

The fourth proportional to 8,130.35, 11,219.71 and 4,545.29 is: 6,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.35 : 11,219.71 = 4,545.29 : x
  2. Step 2: Convert to fraction form
    8,130.35/11,219.71 = 4,545.29/x
  3. Step 3: Cross multiply
    8,130.35x = 11,219.71 × 4,545.29
  4. Step 4: Simplify right side
    8,130.35x = 50,996,835.67
  5. Step 5: Solve for x
    x = 50,996,835.67/8,130.35
  6. Step 6: Final answer
    x = 6,272.40

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Half scale
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Double scale
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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.