Home / 1,360.16-2,040.87-580.40

Finding the Fourth Proportional to 1,360.16, 2,040.87 and 580.40

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Solution

The fourth proportional to 1,360.16, 2,040.87 and 580.40 is: 870.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.16 : 2,040.87 = 580.40 : x
  2. Step 2: Convert to fraction form
    1,360.16/2,040.87 = 580.40/x
  3. Step 3: Cross multiply
    1,360.16x = 2,040.87 × 580.40
  4. Step 4: Simplify right side
    1,360.16x = 1,184,520.95
  5. Step 5: Solve for x
    x = 1,184,520.95/1,360.16
  6. Step 6: Final answer
    x = 870.87

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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.