Home / 2,545.72-3,508.62-2,190.76

Finding the Fourth Proportional to 2,545.72, 3,508.62 and 2,190.76

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Solution

The fourth proportional to 2,545.72, 3,508.62 and 2,190.76 is: 3,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.72 : 3,508.62 = 2,190.76 : x
  2. Step 2: Convert to fraction form
    2,545.72/3,508.62 = 2,190.76/x
  3. Step 3: Cross multiply
    2,545.72x = 3,508.62 × 2,190.76
  4. Step 4: Simplify right side
    2,545.72x = 7,686,526.81
  5. Step 5: Solve for x
    x = 7,686,526.81/2,545.72
  6. Step 6: Final answer
    x = 3,019.40

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Half scale
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Double scale
Find fourth proportional to 2,546.72, 3,510 and 2,191.76
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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.