Home / 3,430.40-4,732.48-2,643.20

Finding the Fourth Proportional to 3,430.40, 4,732.48 and 2,643.20

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Solution

The fourth proportional to 3,430.40, 4,732.48 and 2,643.20 is: 3,646.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.40 : 4,732.48 = 2,643.20 : x
  2. Step 2: Convert to fraction form
    3,430.40/4,732.48 = 2,643.20/x
  3. Step 3: Cross multiply
    3,430.40x = 4,732.48 × 2,643.20
  4. Step 4: Simplify right side
    3,430.40x = 12,508,891.14
  5. Step 5: Solve for x
    x = 12,508,891.14/3,430.40
  6. Step 6: Final answer
    x = 3,646.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.