Home / 1,905.04-2,628.84-1,108.30

Finding the Fourth Proportional to 1,905.04, 2,628.84 and 1,108.30

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Solution

The fourth proportional to 1,905.04, 2,628.84 and 1,108.30 is: 1,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.04 : 2,628.84 = 1,108.30 : x
  2. Step 2: Convert to fraction form
    1,905.04/2,628.84 = 1,108.30/x
  3. Step 3: Cross multiply
    1,905.04x = 2,628.84 × 1,108.30
  4. Step 4: Simplify right side
    1,905.04x = 2,913,543.37
  5. Step 5: Solve for x
    x = 2,913,543.37/1,905.04
  6. Step 6: Final answer
    x = 1,529.39

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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.