Home / 7,085.65-10,621.54-2,640.06

Finding the Fourth Proportional to 7,085.65, 10,621.54 and 2,640.06

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Solution

The fourth proportional to 7,085.65, 10,621.54 and 2,640.06 is: 3,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.65 : 10,621.54 = 2,640.06 : x
  2. Step 2: Convert to fraction form
    7,085.65/10,621.54 = 2,640.06/x
  3. Step 3: Cross multiply
    7,085.65x = 10,621.54 × 2,640.06
  4. Step 4: Simplify right side
    7,085.65x = 28,041,502.89
  5. Step 5: Solve for x
    x = 28,041,502.89/7,085.65
  6. Step 6: Final answer
    x = 3,957.51

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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.