Home / 2,989.75-4,125.95-1,870.33

Finding the Fourth Proportional to 2,989.75, 4,125.95 and 1,870.33

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Solution

The fourth proportional to 2,989.75, 4,125.95 and 1,870.33 is: 2,581.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.75 : 4,125.95 = 1,870.33 : x
  2. Step 2: Convert to fraction form
    2,989.75/4,125.95 = 1,870.33/x
  3. Step 3: Cross multiply
    2,989.75x = 4,125.95 × 1,870.33
  4. Step 4: Simplify right side
    2,989.75x = 7,716,875.41
  5. Step 5: Solve for x
    x = 7,716,875.41/2,989.75
  6. Step 6: Final answer
    x = 2,581.11

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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.