Home / 5,475-7,555.77-3,117.36

Finding the Fourth Proportional to 5,475, 7,555.77 and 3,117.36

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Solution

The fourth proportional to 5,475, 7,555.77 and 3,117.36 is: 4,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475 : 7,555.77 = 3,117.36 : x
  2. Step 2: Convert to fraction form
    5,475/7,555.77 = 3,117.36/x
  3. Step 3: Cross multiply
    5,475x = 7,555.77 × 3,117.36
  4. Step 4: Simplify right side
    5,475x = 23,554,055.17
  5. Step 5: Solve for x
    x = 23,554,055.17/5,475
  6. Step 6: Final answer
    x = 4,302.11

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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.