Home / 2,770.12-4,155.80-1,038.76

Finding the Fourth Proportional to 2,770.12, 4,155.80 and 1,038.76

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Solution

The fourth proportional to 2,770.12, 4,155.80 and 1,038.76 is: 1,558.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.12 : 4,155.80 = 1,038.76 : x
  2. Step 2: Convert to fraction form
    2,770.12/4,155.80 = 1,038.76/x
  3. Step 3: Cross multiply
    2,770.12x = 4,155.80 × 1,038.76
  4. Step 4: Simplify right side
    2,770.12x = 4,316,878.81
  5. Step 5: Solve for x
    x = 4,316,878.81/2,770.12
  6. Step 6: Final answer
    x = 1,558.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.