Home / 5,712.40-8,570.08-1,816.80

Finding the Fourth Proportional to 5,712.40, 8,570.08 and 1,816.80

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Solution

The fourth proportional to 5,712.40, 8,570.08 and 1,816.80 is: 2,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,712.40 : 8,570.08 = 1,816.80 : x
  2. Step 2: Convert to fraction form
    5,712.40/8,570.08 = 1,816.80/x
  3. Step 3: Cross multiply
    5,712.40x = 8,570.08 × 1,816.80
  4. Step 4: Simplify right side
    5,712.40x = 15,570,158.68
  5. Step 5: Solve for x
    x = 15,570,158.68/5,712.40
  6. Step 6: Final answer
    x = 2,725.68

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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.