Home / 7,038.40-10,552.80-2,655.20

Finding the Fourth Proportional to 7,038.40, 10,552.80 and 2,655.20

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Solution

The fourth proportional to 7,038.40, 10,552.80 and 2,655.20 is: 3,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,038.40 : 10,552.80 = 2,655.20 : x
  2. Step 2: Convert to fraction form
    7,038.40/10,552.80 = 2,655.20/x
  3. Step 3: Cross multiply
    7,038.40x = 10,552.80 × 2,655.20
  4. Step 4: Simplify right side
    7,038.40x = 28,019,794.56
  5. Step 5: Solve for x
    x = 28,019,794.56/7,038.40
  6. Step 6: Final answer
    x = 3,980.99

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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.