Home / 5,457.78-8,185.59-1,561.14

Finding the Fourth Proportional to 5,457.78, 8,185.59 and 1,561.14

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Solution

The fourth proportional to 5,457.78, 8,185.59 and 1,561.14 is: 2,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.78 : 8,185.59 = 1,561.14 : x
  2. Step 2: Convert to fraction form
    5,457.78/8,185.59 = 1,561.14/x
  3. Step 3: Cross multiply
    5,457.78x = 8,185.59 × 1,561.14
  4. Step 4: Simplify right side
    5,457.78x = 12,778,851.97
  5. Step 5: Solve for x
    x = 12,778,851.97/5,457.78
  6. Step 6: Final answer
    x = 2,341.40

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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.