Home / 1,557.02-2,143.86-1,335.08

Finding the Fourth Proportional to 1,557.02, 2,143.86 and 1,335.08

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Solution

The fourth proportional to 1,557.02, 2,143.86 and 1,335.08 is: 1,838.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.02 : 2,143.86 = 1,335.08 : x
  2. Step 2: Convert to fraction form
    1,557.02/2,143.86 = 1,335.08/x
  3. Step 3: Cross multiply
    1,557.02x = 2,143.86 × 1,335.08
  4. Step 4: Simplify right side
    1,557.02x = 2,862,224.61
  5. Step 5: Solve for x
    x = 2,862,224.61/1,557.02
  6. Step 6: Final answer
    x = 1,838.27

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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.