Home / 2,152.55-2,969.65-1,561.79

Finding the Fourth Proportional to 2,152.55, 2,969.65 and 1,561.79

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Solution

The fourth proportional to 2,152.55, 2,969.65 and 1,561.79 is: 2,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.55 : 2,969.65 = 1,561.79 : x
  2. Step 2: Convert to fraction form
    2,152.55/2,969.65 = 1,561.79/x
  3. Step 3: Cross multiply
    2,152.55x = 2,969.65 × 1,561.79
  4. Step 4: Simplify right side
    2,152.55x = 4,637,969.67
  5. Step 5: Solve for x
    x = 4,637,969.67/2,152.55
  6. Step 6: Final answer
    x = 2,154.64

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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.