Home / 1,140.29-1,573.77-1,069.93

Finding the Fourth Proportional to 1,140.29, 1,573.77 and 1,069.93

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Solution

The fourth proportional to 1,140.29, 1,573.77 and 1,069.93 is: 1,476.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.29 : 1,573.77 = 1,069.93 : x
  2. Step 2: Convert to fraction form
    1,140.29/1,573.77 = 1,069.93/x
  3. Step 3: Cross multiply
    1,140.29x = 1,573.77 × 1,069.93
  4. Step 4: Simplify right side
    1,140.29x = 1,683,831.13
  5. Step 5: Solve for x
    x = 1,683,831.13/1,140.29
  6. Step 6: Final answer
    x = 1,476.66

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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.