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Finding the Fourth Proportional to 3,483.76, 4,807.56 and 1,911.84

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Solution

The fourth proportional to 3,483.76, 4,807.56 and 1,911.84 is: 2,638.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,483.76 : 4,807.56 = 1,911.84 : x
  2. Step 2: Convert to fraction form
    3,483.76/4,807.56 = 1,911.84/x
  3. Step 3: Cross multiply
    3,483.76x = 4,807.56 × 1,911.84
  4. Step 4: Simplify right side
    3,483.76x = 9,191,285.51
  5. Step 5: Solve for x
    x = 9,191,285.51/3,483.76
  6. Step 6: Final answer
    x = 2,638.32

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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.