Home / 7,705.16-11,557.70-1,861.75

Finding the Fourth Proportional to 7,705.16, 11,557.70 and 1,861.75

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Solution

The fourth proportional to 7,705.16, 11,557.70 and 1,861.75 is: 2,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,705.16 : 11,557.70 = 1,861.75 : x
  2. Step 2: Convert to fraction form
    7,705.16/11,557.70 = 1,861.75/x
  3. Step 3: Cross multiply
    7,705.16x = 11,557.70 × 1,861.75
  4. Step 4: Simplify right side
    7,705.16x = 21,517,547.98
  5. Step 5: Solve for x
    x = 21,517,547.98/7,705.16
  6. Step 6: Final answer
    x = 2,792.62

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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.