Home / 4,187.40-6,280.64-1,109.40

Finding the Fourth Proportional to 4,187.40, 6,280.64 and 1,109.40

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Solution

The fourth proportional to 4,187.40, 6,280.64 and 1,109.40 is: 1,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.40 : 6,280.64 = 1,109.40 : x
  2. Step 2: Convert to fraction form
    4,187.40/6,280.64 = 1,109.40/x
  3. Step 3: Cross multiply
    4,187.40x = 6,280.64 × 1,109.40
  4. Step 4: Simplify right side
    4,187.40x = 6,967,742.02
  5. Step 5: Solve for x
    x = 6,967,742.02/4,187.40
  6. Step 6: Final answer
    x = 1,663.98

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1.5x scale

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.