Home / 2,818.48-3,889.84-1,770.40

Finding the Fourth Proportional to 2,818.48, 3,889.84 and 1,770.40

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Solution

The fourth proportional to 2,818.48, 3,889.84 and 1,770.40 is: 2,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.48 : 3,889.84 = 1,770.40 : x
  2. Step 2: Convert to fraction form
    2,818.48/3,889.84 = 1,770.40/x
  3. Step 3: Cross multiply
    2,818.48x = 3,889.84 × 1,770.40
  4. Step 4: Simplify right side
    2,818.48x = 6,886,572.74
  5. Step 5: Solve for x
    x = 6,886,572.74/2,818.48
  6. Step 6: Final answer
    x = 2,443.36

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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.