Home / 3,280.02-4,920.03-1,430.75

Finding the Fourth Proportional to 3,280.02, 4,920.03 and 1,430.75

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Solution

The fourth proportional to 3,280.02, 4,920.03 and 1,430.75 is: 2,146.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.02 : 4,920.03 = 1,430.75 : x
  2. Step 2: Convert to fraction form
    3,280.02/4,920.03 = 1,430.75/x
  3. Step 3: Cross multiply
    3,280.02x = 4,920.03 × 1,430.75
  4. Step 4: Simplify right side
    3,280.02x = 7,039,308.32
  5. Step 5: Solve for x
    x = 7,039,308.32/3,280.02
  6. Step 6: Final answer
    x = 2,146.12

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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.