Home / 1,750.90-2,415.63-1,121.53

Finding the Fourth Proportional to 1,750.90, 2,415.63 and 1,121.53

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Solution

The fourth proportional to 1,750.90, 2,415.63 and 1,121.53 is: 1,547.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,750.90 : 2,415.63 = 1,121.53 : x
  2. Step 2: Convert to fraction form
    1,750.90/2,415.63 = 1,121.53/x
  3. Step 3: Cross multiply
    1,750.90x = 2,415.63 × 1,121.53
  4. Step 4: Simplify right side
    1,750.90x = 2,709,201.51
  5. Step 5: Solve for x
    x = 2,709,201.51/1,750.90
  6. Step 6: Final answer
    x = 1,547.32

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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.