Home / 7,578.64-10,457.28-4,221.37

Finding the Fourth Proportional to 7,578.64, 10,457.28 and 4,221.37

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Solution

The fourth proportional to 7,578.64, 10,457.28 and 4,221.37 is: 5,824.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.64 : 10,457.28 = 4,221.37 : x
  2. Step 2: Convert to fraction form
    7,578.64/10,457.28 = 4,221.37/x
  3. Step 3: Cross multiply
    7,578.64x = 10,457.28 × 4,221.37
  4. Step 4: Simplify right side
    7,578.64x = 44,144,048.07
  5. Step 5: Solve for x
    x = 44,144,048.07/7,578.64
  6. Step 6: Final answer
    x = 5,824.80

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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.