Home / 2,152.30-2,969.24-1,312.87

Finding the Fourth Proportional to 2,152.30, 2,969.24 and 1,312.87

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Solution

The fourth proportional to 2,152.30, 2,969.24 and 1,312.87 is: 1,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.30 : 2,969.24 = 1,312.87 : x
  2. Step 2: Convert to fraction form
    2,152.30/2,969.24 = 1,312.87/x
  3. Step 3: Cross multiply
    2,152.30x = 2,969.24 × 1,312.87
  4. Step 4: Simplify right side
    2,152.30x = 3,898,212.13
  5. Step 5: Solve for x
    x = 3,898,212.13/2,152.30
  6. Step 6: Final answer
    x = 1,811.19

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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.