Home / 1,320.17-1,818.65-1,110.35

Finding the Fourth Proportional to 1,320.17, 1,818.65 and 1,110.35

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Solution

The fourth proportional to 1,320.17, 1,818.65 and 1,110.35 is: 1,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.17 : 1,818.65 = 1,110.35 : x
  2. Step 2: Convert to fraction form
    1,320.17/1,818.65 = 1,110.35/x
  3. Step 3: Cross multiply
    1,320.17x = 1,818.65 × 1,110.35
  4. Step 4: Simplify right side
    1,320.17x = 2,019,328.93
  5. Step 5: Solve for x
    x = 2,019,328.93/1,320.17
  6. Step 6: Final answer
    x = 1,529.60

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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.