Home / 2,612.48-3,916.80-1,312.64

Finding the Fourth Proportional to 2,612.48, 3,916.80 and 1,312.64

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Solution

The fourth proportional to 2,612.48, 3,916.80 and 1,312.64 is: 1,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.48 : 3,916.80 = 1,312.64 : x
  2. Step 2: Convert to fraction form
    2,612.48/3,916.80 = 1,312.64/x
  3. Step 3: Cross multiply
    2,612.48x = 3,916.80 × 1,312.64
  4. Step 4: Simplify right side
    2,612.48x = 5,141,348.35
  5. Step 5: Solve for x
    x = 5,141,348.35/2,612.48
  6. Step 6: Final answer
    x = 1,968.00

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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.