Home / 5,156.63-7,116.15-2,798.77

Finding the Fourth Proportional to 5,156.63, 7,116.15 and 2,798.77

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Solution

The fourth proportional to 5,156.63, 7,116.15 and 2,798.77 is: 3,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.63 : 7,116.15 = 2,798.77 : x
  2. Step 2: Convert to fraction form
    5,156.63/7,116.15 = 2,798.77/x
  3. Step 3: Cross multiply
    5,156.63x = 7,116.15 × 2,798.77
  4. Step 4: Simplify right side
    5,156.63x = 19,916,467.14
  5. Step 5: Solve for x
    x = 19,916,467.14/5,156.63
  6. Step 6: Final answer
    x = 3,862.30

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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.