Home / 3,127.76-4,316.18-1,869.50

Finding the Fourth Proportional to 3,127.76, 4,316.18 and 1,869.50

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Solution

The fourth proportional to 3,127.76, 4,316.18 and 1,869.50 is: 2,579.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.76 : 4,316.18 = 1,869.50 : x
  2. Step 2: Convert to fraction form
    3,127.76/4,316.18 = 1,869.50/x
  3. Step 3: Cross multiply
    3,127.76x = 4,316.18 × 1,869.50
  4. Step 4: Simplify right side
    3,127.76x = 8,069,109.21
  5. Step 5: Solve for x
    x = 8,069,109.21/3,127.76
  6. Step 6: Final answer
    x = 2,579.84

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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.