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Finding the Fourth Proportional to 1,779.10, 2,455.05 and 993.13

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Solution

The fourth proportional to 1,779.10, 2,455.05 and 993.13 is: 1,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.10 : 2,455.05 = 993.13 : x
  2. Step 2: Convert to fraction form
    1,779.10/2,455.05 = 993.13/x
  3. Step 3: Cross multiply
    1,779.10x = 2,455.05 × 993.13
  4. Step 4: Simplify right side
    1,779.10x = 2,438,183.81
  5. Step 5: Solve for x
    x = 2,438,183.81/1,779.10
  6. Step 6: Final answer
    x = 1,370.46

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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.