Home / 2,631.79-3,631.45-1,569.51

Finding the Fourth Proportional to 2,631.79, 3,631.45 and 1,569.51

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Solution

The fourth proportional to 2,631.79, 3,631.45 and 1,569.51 is: 2,165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.79 : 3,631.45 = 1,569.51 : x
  2. Step 2: Convert to fraction form
    2,631.79/3,631.45 = 1,569.51/x
  3. Step 3: Cross multiply
    2,631.79x = 3,631.45 × 1,569.51
  4. Step 4: Simplify right side
    2,631.79x = 5,699,571.08
  5. Step 5: Solve for x
    x = 5,699,571.08/2,631.79
  6. Step 6: Final answer
    x = 2,165.67

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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.