Home / 2,529.40-3,490.32-1,645.26

Finding the Fourth Proportional to 2,529.40, 3,490.32 and 1,645.26

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Solution

The fourth proportional to 2,529.40, 3,490.32 and 1,645.26 is: 2,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.40 : 3,490.32 = 1,645.26 : x
  2. Step 2: Convert to fraction form
    2,529.40/3,490.32 = 1,645.26/x
  3. Step 3: Cross multiply
    2,529.40x = 3,490.32 × 1,645.26
  4. Step 4: Simplify right side
    2,529.40x = 5,742,482.72
  5. Step 5: Solve for x
    x = 5,742,482.72/2,529.40
  6. Step 6: Final answer
    x = 2,270.29

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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.