Home / 2,124.46-2,931.75-1,180.30

Finding the Fourth Proportional to 2,124.46, 2,931.75 and 1,180.30

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Solution

The fourth proportional to 2,124.46, 2,931.75 and 1,180.30 is: 1,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.46 : 2,931.75 = 1,180.30 : x
  2. Step 2: Convert to fraction form
    2,124.46/2,931.75 = 1,180.30/x
  3. Step 3: Cross multiply
    2,124.46x = 2,931.75 × 1,180.30
  4. Step 4: Simplify right side
    2,124.46x = 3,460,354.81
  5. Step 5: Solve for x
    x = 3,460,354.81/2,124.46
  6. Step 6: Final answer
    x = 1,628.82

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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.