Home / 1,971.69-2,720.93-1,075.42

Finding the Fourth Proportional to 1,971.69, 2,720.93 and 1,075.42

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Solution

The fourth proportional to 1,971.69, 2,720.93 and 1,075.42 is: 1,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.69 : 2,720.93 = 1,075.42 : x
  2. Step 2: Convert to fraction form
    1,971.69/2,720.93 = 1,075.42/x
  3. Step 3: Cross multiply
    1,971.69x = 2,720.93 × 1,075.42
  4. Step 4: Simplify right side
    1,971.69x = 2,926,142.54
  5. Step 5: Solve for x
    x = 2,926,142.54/1,971.69
  6. Step 6: Final answer
    x = 1,484.08

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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.