Home / 1,569.07-2,163.55-1,071.98

Finding the Fourth Proportional to 1,569.07, 2,163.55 and 1,071.98

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Solution

The fourth proportional to 1,569.07, 2,163.55 and 1,071.98 is: 1,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.07 : 2,163.55 = 1,071.98 : x
  2. Step 2: Convert to fraction form
    1,569.07/2,163.55 = 1,071.98/x
  3. Step 3: Cross multiply
    1,569.07x = 2,163.55 × 1,071.98
  4. Step 4: Simplify right side
    1,569.07x = 2,319,282.33
  5. Step 5: Solve for x
    x = 2,319,282.33/1,569.07
  6. Step 6: Final answer
    x = 1,478.13

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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.