Home / 5,055.60-7,580.70-2,130.60

Finding the Fourth Proportional to 5,055.60, 7,580.70 and 2,130.60

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Solution

The fourth proportional to 5,055.60, 7,580.70 and 2,130.60 is: 3,194.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055.60 : 7,580.70 = 2,130.60 : x
  2. Step 2: Convert to fraction form
    5,055.60/7,580.70 = 2,130.60/x
  3. Step 3: Cross multiply
    5,055.60x = 7,580.70 × 2,130.60
  4. Step 4: Simplify right side
    5,055.60x = 16,151,439.42
  5. Step 5: Solve for x
    x = 16,151,439.42/5,055.60
  6. Step 6: Final answer
    x = 3,194.76

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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.