Home / 7,287.62-10,931.47-2,905.07

Finding the Fourth Proportional to 7,287.62, 10,931.47 and 2,905.07

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Solution

The fourth proportional to 7,287.62, 10,931.47 and 2,905.07 is: 4,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.62 : 10,931.47 = 2,905.07 : x
  2. Step 2: Convert to fraction form
    7,287.62/10,931.47 = 2,905.07/x
  3. Step 3: Cross multiply
    7,287.62x = 10,931.47 × 2,905.07
  4. Step 4: Simplify right side
    7,287.62x = 31,756,623.63
  5. Step 5: Solve for x
    x = 31,756,623.63/7,287.62
  6. Step 6: Final answer
    x = 4,357.62

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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.