Home / 1,038.20-1,559.10-552.20

Finding the Fourth Proportional to 1,038.20, 1,559.10 and 552.20

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Solution

The fourth proportional to 1,038.20, 1,559.10 and 552.20 is: 829.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.20 : 1,559.10 = 552.20 : x
  2. Step 2: Convert to fraction form
    1,038.20/1,559.10 = 552.20/x
  3. Step 3: Cross multiply
    1,038.20x = 1,559.10 × 552.20
  4. Step 4: Simplify right side
    1,038.20x = 860,935.02
  5. Step 5: Solve for x
    x = 860,935.02/1,038.20
  6. Step 6: Final answer
    x = 829.26

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1.5x scale

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.