Home / 2,924.80-4,035.78-1,665.40

Finding the Fourth Proportional to 2,924.80, 4,035.78 and 1,665.40

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Solution

The fourth proportional to 2,924.80, 4,035.78 and 1,665.40 is: 2,298.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,924.80 : 4,035.78 = 1,665.40 : x
  2. Step 2: Convert to fraction form
    2,924.80/4,035.78 = 1,665.40/x
  3. Step 3: Cross multiply
    2,924.80x = 4,035.78 × 1,665.40
  4. Step 4: Simplify right side
    2,924.80x = 6,721,188.01
  5. Step 5: Solve for x
    x = 6,721,188.01/2,924.80
  6. Step 6: Final answer
    x = 2,298.00

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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.