Home / 4,280.17-6,420.95-1,815.01

Finding the Fourth Proportional to 4,280.17, 6,420.95 and 1,815.01

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Solution

The fourth proportional to 4,280.17, 6,420.95 and 1,815.01 is: 2,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.17 : 6,420.95 = 1,815.01 : x
  2. Step 2: Convert to fraction form
    4,280.17/6,420.95 = 1,815.01/x
  3. Step 3: Cross multiply
    4,280.17x = 6,420.95 × 1,815.01
  4. Step 4: Simplify right side
    4,280.17x = 11,654,065.03
  5. Step 5: Solve for x
    x = 11,654,065.03/4,280.17
  6. Step 6: Final answer
    x = 2,722.81

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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.