Home / 4,280.08-6,420.20-1,973.20

Finding the Fourth Proportional to 4,280.08, 6,420.20 and 1,973.20

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Solution

The fourth proportional to 4,280.08, 6,420.20 and 1,973.20 is: 2,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.08 : 6,420.20 = 1,973.20 : x
  2. Step 2: Convert to fraction form
    4,280.08/6,420.20 = 1,973.20/x
  3. Step 3: Cross multiply
    4,280.08x = 6,420.20 × 1,973.20
  4. Step 4: Simplify right side
    4,280.08x = 12,668,338.64
  5. Step 5: Solve for x
    x = 12,668,338.64/4,280.08
  6. Step 6: Final answer
    x = 2,959.84

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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.