Home / 5,187.04-7,158.71-2,887.66

Finding the Fourth Proportional to 5,187.04, 7,158.71 and 2,887.66

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Solution

The fourth proportional to 5,187.04, 7,158.71 and 2,887.66 is: 3,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.04 : 7,158.71 = 2,887.66 : x
  2. Step 2: Convert to fraction form
    5,187.04/7,158.71 = 2,887.66/x
  3. Step 3: Cross multiply
    5,187.04x = 7,158.71 × 2,887.66
  4. Step 4: Simplify right side
    5,187.04x = 20,671,920.52
  5. Step 5: Solve for x
    x = 20,671,920.52/5,187.04
  6. Step 6: Final answer
    x = 3,985.30

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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.