Home / 2,130.50-2,940.11-1,246.13

Finding the Fourth Proportional to 2,130.50, 2,940.11 and 1,246.13

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Solution

The fourth proportional to 2,130.50, 2,940.11 and 1,246.13 is: 1,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.50 : 2,940.11 = 1,246.13 : x
  2. Step 2: Convert to fraction form
    2,130.50/2,940.11 = 1,246.13/x
  3. Step 3: Cross multiply
    2,130.50x = 2,940.11 × 1,246.13
  4. Step 4: Simplify right side
    2,130.50x = 3,663,738.34
  5. Step 5: Solve for x
    x = 3,663,738.34/2,130.50
  6. Step 6: Final answer
    x = 1,719.67

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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.