Home / 2,130.08-3,188.37-1,543.10

Finding the Fourth Proportional to 2,130.08, 3,188.37 and 1,543.10

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Solution

The fourth proportional to 2,130.08, 3,188.37 and 1,543.10 is: 2,309.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.08 : 3,188.37 = 1,543.10 : x
  2. Step 2: Convert to fraction form
    2,130.08/3,188.37 = 1,543.10/x
  3. Step 3: Cross multiply
    2,130.08x = 3,188.37 × 1,543.10
  4. Step 4: Simplify right side
    2,130.08x = 4,919,973.75
  5. Step 5: Solve for x
    x = 4,919,973.75/2,130.08
  6. Step 6: Final answer
    x = 2,309.76

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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.