Home / 1,971.49-2,720.65-1,075.23

Finding the Fourth Proportional to 1,971.49, 2,720.65 and 1,075.23

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Solution

The fourth proportional to 1,971.49, 2,720.65 and 1,075.23 is: 1,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.49 : 2,720.65 = 1,075.23 : x
  2. Step 2: Convert to fraction form
    1,971.49/2,720.65 = 1,075.23/x
  3. Step 3: Cross multiply
    1,971.49x = 2,720.65 × 1,075.23
  4. Step 4: Simplify right side
    1,971.49x = 2,925,329.52
  5. Step 5: Solve for x
    x = 2,925,329.52/1,971.49
  6. Step 6: Final answer
    x = 1,483.81

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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.