Home / 7,140.15-10,707.80-2,459.36

Finding the Fourth Proportional to 7,140.15, 10,707.80 and 2,459.36

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Solution

The fourth proportional to 7,140.15, 10,707.80 and 2,459.36 is: 3,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.15 : 10,707.80 = 2,459.36 : x
  2. Step 2: Convert to fraction form
    7,140.15/10,707.80 = 2,459.36/x
  3. Step 3: Cross multiply
    7,140.15x = 10,707.80 × 2,459.36
  4. Step 4: Simplify right side
    7,140.15x = 26,334,349.48
  5. Step 5: Solve for x
    x = 26,334,349.48/7,140.15
  6. Step 6: Final answer
    x = 3,688.21

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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.