Home / 4,280.16-6,420.64-1,160.18

Finding the Fourth Proportional to 4,280.16, 6,420.64 and 1,160.18

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Solution

The fourth proportional to 4,280.16, 6,420.64 and 1,160.18 is: 1,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.16 : 6,420.64 = 1,160.18 : x
  2. Step 2: Convert to fraction form
    4,280.16/6,420.64 = 1,160.18/x
  3. Step 3: Cross multiply
    4,280.16x = 6,420.64 × 1,160.18
  4. Step 4: Simplify right side
    4,280.16x = 7,449,083.31
  5. Step 5: Solve for x
    x = 7,449,083.31/4,280.16
  6. Step 6: Final answer
    x = 1,740.38

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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.