Home / 2,989.15-4,125.06-1,870.75

Finding the Fourth Proportional to 2,989.15, 4,125.06 and 1,870.75

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Solution

The fourth proportional to 2,989.15, 4,125.06 and 1,870.75 is: 2,581.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.15 : 4,125.06 = 1,870.75 : x
  2. Step 2: Convert to fraction form
    2,989.15/4,125.06 = 1,870.75/x
  3. Step 3: Cross multiply
    2,989.15x = 4,125.06 × 1,870.75
  4. Step 4: Simplify right side
    2,989.15x = 7,716,956.00
  5. Step 5: Solve for x
    x = 7,716,956.00/2,989.15
  6. Step 6: Final answer
    x = 2,581.66

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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.