Home / 2,187.61-3,019.28-2,089.19

Finding the Fourth Proportional to 2,187.61, 3,019.28 and 2,089.19

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Solution

The fourth proportional to 2,187.61, 3,019.28 and 2,089.19 is: 2,883.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.61 : 3,019.28 = 2,089.19 : x
  2. Step 2: Convert to fraction form
    2,187.61/3,019.28 = 2,089.19/x
  3. Step 3: Cross multiply
    2,187.61x = 3,019.28 × 2,089.19
  4. Step 4: Simplify right side
    2,187.61x = 6,307,846.69
  5. Step 5: Solve for x
    x = 6,307,846.69/2,187.61
  6. Step 6: Final answer
    x = 2,883.45

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1.5x scale

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.