Home / 1,915.09-2,642.61-1,075.62

Finding the Fourth Proportional to 1,915.09, 2,642.61 and 1,075.62

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Solution

The fourth proportional to 1,915.09, 2,642.61 and 1,075.62 is: 1,484.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.09 : 2,642.61 = 1,075.62 : x
  2. Step 2: Convert to fraction form
    1,915.09/2,642.61 = 1,075.62/x
  3. Step 3: Cross multiply
    1,915.09x = 2,642.61 × 1,075.62
  4. Step 4: Simplify right side
    1,915.09x = 2,842,444.17
  5. Step 5: Solve for x
    x = 2,842,444.17/1,915.09
  6. Step 6: Final answer
    x = 1,484.24

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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.