Home / 1,507.47-2,261.51-686.59

Finding the Fourth Proportional to 1,507.47, 2,261.51 and 686.59

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Solution

The fourth proportional to 1,507.47, 2,261.51 and 686.59 is: 1,030.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.47 : 2,261.51 = 686.59 : x
  2. Step 2: Convert to fraction form
    1,507.47/2,261.51 = 686.59/x
  3. Step 3: Cross multiply
    1,507.47x = 2,261.51 × 686.59
  4. Step 4: Simplify right side
    1,507.47x = 1,552,730.15
  5. Step 5: Solve for x
    x = 1,552,730.15/1,507.47
  6. Step 6: Final answer
    x = 1,030.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.