Home / 1,040.15-1,435.35-609.10

Finding the Fourth Proportional to 1,040.15, 1,435.35 and 609.10

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Solution

The fourth proportional to 1,040.15, 1,435.35 and 609.10 is: 840.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.15 : 1,435.35 = 609.10 : x
  2. Step 2: Convert to fraction form
    1,040.15/1,435.35 = 609.10/x
  3. Step 3: Cross multiply
    1,040.15x = 1,435.35 × 609.10
  4. Step 4: Simplify right side
    1,040.15x = 874,269.28
  5. Step 5: Solve for x
    x = 874,269.28/1,040.15
  6. Step 6: Final answer
    x = 840.52

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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.