Home / 2,013.40-2,778.63-1,129.26

Finding the Fourth Proportional to 2,013.40, 2,778.63 and 1,129.26

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Solution

The fourth proportional to 2,013.40, 2,778.63 and 1,129.26 is: 1,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.40 : 2,778.63 = 1,129.26 : x
  2. Step 2: Convert to fraction form
    2,013.40/2,778.63 = 1,129.26/x
  3. Step 3: Cross multiply
    2,013.40x = 2,778.63 × 1,129.26
  4. Step 4: Simplify right side
    2,013.40x = 3,137,795.71
  5. Step 5: Solve for x
    x = 3,137,795.71/2,013.40
  6. Step 6: Final answer
    x = 1,558.46

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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.