Home / 5,681.39-8,521.47-1,521.81

Finding the Fourth Proportional to 5,681.39, 8,521.47 and 1,521.81

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Solution

The fourth proportional to 5,681.39, 8,521.47 and 1,521.81 is: 2,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.39 : 8,521.47 = 1,521.81 : x
  2. Step 2: Convert to fraction form
    5,681.39/8,521.47 = 1,521.81/x
  3. Step 3: Cross multiply
    5,681.39x = 8,521.47 × 1,521.81
  4. Step 4: Simplify right side
    5,681.39x = 12,968,058.26
  5. Step 5: Solve for x
    x = 12,968,058.26/5,681.39
  6. Step 6: Final answer
    x = 2,282.55

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1.5x scale

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.