Home / 5,095.60-7,640.70-1,808.80

Finding the Fourth Proportional to 5,095.60, 7,640.70 and 1,808.80

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Solution

The fourth proportional to 5,095.60, 7,640.70 and 1,808.80 is: 2,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,095.60 : 7,640.70 = 1,808.80 : x
  2. Step 2: Convert to fraction form
    5,095.60/7,640.70 = 1,808.80/x
  3. Step 3: Cross multiply
    5,095.60x = 7,640.70 × 1,808.80
  4. Step 4: Simplify right side
    5,095.60x = 13,820,498.16
  5. Step 5: Solve for x
    x = 13,820,498.16/5,095.60
  6. Step 6: Final answer
    x = 2,712.24

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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.