Home / 5,158.59-7,118.85-2,800.77

Finding the Fourth Proportional to 5,158.59, 7,118.85 and 2,800.77

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Solution

The fourth proportional to 5,158.59, 7,118.85 and 2,800.77 is: 3,865.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.59 : 7,118.85 = 2,800.77 : x
  2. Step 2: Convert to fraction form
    5,158.59/7,118.85 = 2,800.77/x
  3. Step 3: Cross multiply
    5,158.59x = 7,118.85 × 2,800.77
  4. Step 4: Simplify right side
    5,158.59x = 19,938,261.51
  5. Step 5: Solve for x
    x = 19,938,261.51/5,158.59
  6. Step 6: Final answer
    x = 3,865.06

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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.