Home / 4,280.02-6,420.96-1,318.48

Finding the Fourth Proportional to 4,280.02, 6,420.96 and 1,318.48

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Solution

The fourth proportional to 4,280.02, 6,420.96 and 1,318.48 is: 1,978.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.02 : 6,420.96 = 1,318.48 : x
  2. Step 2: Convert to fraction form
    4,280.02/6,420.96 = 1,318.48/x
  3. Step 3: Cross multiply
    4,280.02x = 6,420.96 × 1,318.48
  4. Step 4: Simplify right side
    4,280.02x = 8,465,907.34
  5. Step 5: Solve for x
    x = 8,465,907.34/4,280.02
  6. Step 6: Final answer
    x = 1,978.01

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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.