Home / 1,575.48-2,168.64-1,368.12

Finding the Fourth Proportional to 1,575.48, 2,168.64 and 1,368.12

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Solution

The fourth proportional to 1,575.48, 2,168.64 and 1,368.12 is: 1,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.48 : 2,168.64 = 1,368.12 : x
  2. Step 2: Convert to fraction form
    1,575.48/2,168.64 = 1,368.12/x
  3. Step 3: Cross multiply
    1,575.48x = 2,168.64 × 1,368.12
  4. Step 4: Simplify right side
    1,575.48x = 2,966,959.76
  5. Step 5: Solve for x
    x = 2,966,959.76/1,575.48
  6. Step 6: Final answer
    x = 1,883.21

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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.