Home / 2,390.95-3,580.66-2,117.35

Finding the Fourth Proportional to 2,390.95, 3,580.66 and 2,117.35

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Solution

The fourth proportional to 2,390.95, 3,580.66 and 2,117.35 is: 3,170.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.95 : 3,580.66 = 2,117.35 : x
  2. Step 2: Convert to fraction form
    2,390.95/3,580.66 = 2,117.35/x
  3. Step 3: Cross multiply
    2,390.95x = 3,580.66 × 2,117.35
  4. Step 4: Simplify right side
    2,390.95x = 7,581,510.45
  5. Step 5: Solve for x
    x = 7,581,510.45/2,390.95
  6. Step 6: Final answer
    x = 3,170.92

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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.