Home / 1,969.32-2,721.29-1,437.30

Finding the Fourth Proportional to 1,969.32, 2,721.29 and 1,437.30

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Solution

The fourth proportional to 1,969.32, 2,721.29 and 1,437.30 is: 1,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.32 : 2,721.29 = 1,437.30 : x
  2. Step 2: Convert to fraction form
    1,969.32/2,721.29 = 1,437.30/x
  3. Step 3: Cross multiply
    1,969.32x = 2,721.29 × 1,437.30
  4. Step 4: Simplify right side
    1,969.32x = 3,911,302.93
  5. Step 5: Solve for x
    x = 3,911,302.93/1,969.32
  6. Step 6: Final answer
    x = 1,986.11

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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.