Home / 5,099.76-7,030.80-3,110.40

Finding the Fourth Proportional to 5,099.76, 7,030.80 and 3,110.40

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Solution

The fourth proportional to 5,099.76, 7,030.80 and 3,110.40 is: 4,288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,099.76 : 7,030.80 = 3,110.40 : x
  2. Step 2: Convert to fraction form
    5,099.76/7,030.80 = 3,110.40/x
  3. Step 3: Cross multiply
    5,099.76x = 7,030.80 × 3,110.40
  4. Step 4: Simplify right side
    5,099.76x = 21,868,600.32
  5. Step 5: Solve for x
    x = 21,868,600.32/5,099.76
  6. Step 6: Final answer
    x = 4,288.16

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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.