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Finding the Fourth Proportional to 3,484.94, 4,809.30 and 1,913.06

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Solution

The fourth proportional to 3,484.94, 4,809.30 and 1,913.06 is: 2,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.94 : 4,809.30 = 1,913.06 : x
  2. Step 2: Convert to fraction form
    3,484.94/4,809.30 = 1,913.06/x
  3. Step 3: Cross multiply
    3,484.94x = 4,809.30 × 1,913.06
  4. Step 4: Simplify right side
    3,484.94x = 9,200,479.46
  5. Step 5: Solve for x
    x = 9,200,479.46/3,484.94
  6. Step 6: Final answer
    x = 2,640.07

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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.