Home / 8,280.51-12,420.81-2,437.20

Finding the Fourth Proportional to 8,280.51, 12,420.81 and 2,437.20

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Solution

The fourth proportional to 8,280.51, 12,420.81 and 2,437.20 is: 3,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.51 : 12,420.81 = 2,437.20 : x
  2. Step 2: Convert to fraction form
    8,280.51/12,420.81 = 2,437.20/x
  3. Step 3: Cross multiply
    8,280.51x = 12,420.81 × 2,437.20
  4. Step 4: Simplify right side
    8,280.51x = 30,271,998.13
  5. Step 5: Solve for x
    x = 30,271,998.13/8,280.51
  6. Step 6: Final answer
    x = 3,655.81

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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.