Home / 1,645.19-2,270.52-973.21

Finding the Fourth Proportional to 1,645.19, 2,270.52 and 973.21

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Solution

The fourth proportional to 1,645.19, 2,270.52 and 973.21 is: 1,343.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.19 : 2,270.52 = 973.21 : x
  2. Step 2: Convert to fraction form
    1,645.19/2,270.52 = 973.21/x
  3. Step 3: Cross multiply
    1,645.19x = 2,270.52 × 973.21
  4. Step 4: Simplify right side
    1,645.19x = 2,209,692.77
  5. Step 5: Solve for x
    x = 2,209,692.77/1,645.19
  6. Step 6: Final answer
    x = 1,343.12

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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.