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Finding the Fourth Proportional to 2,903.68, 4,347.79 and 1,981.06

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Solution

The fourth proportional to 2,903.68, 4,347.79 and 1,981.06 is: 2,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.68 : 4,347.79 = 1,981.06 : x
  2. Step 2: Convert to fraction form
    2,903.68/4,347.79 = 1,981.06/x
  3. Step 3: Cross multiply
    2,903.68x = 4,347.79 × 1,981.06
  4. Step 4: Simplify right side
    2,903.68x = 8,613,232.86
  5. Step 5: Solve for x
    x = 8,613,232.86/2,903.68
  6. Step 6: Final answer
    x = 2,966.32

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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.