Home / 10,287.41-15,430.91-2,891.70

Finding the Fourth Proportional to 10,287.41, 15,430.91 and 2,891.70

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Solution

The fourth proportional to 10,287.41, 15,430.91 and 2,891.70 is: 4,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.41 : 15,430.91 = 2,891.70 : x
  2. Step 2: Convert to fraction form
    10,287.41/15,430.91 = 2,891.70/x
  3. Step 3: Cross multiply
    10,287.41x = 15,430.91 × 2,891.70
  4. Step 4: Simplify right side
    10,287.41x = 44,621,547.99
  5. Step 5: Solve for x
    x = 44,621,547.99/10,287.41
  6. Step 6: Final answer
    x = 4,337.49

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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.