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Finding the Fourth Proportional to 7,074.99, 9,762.93 and 4,088.79

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Solution

The fourth proportional to 7,074.99, 9,762.93 and 4,088.79 is: 5,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.99 : 9,762.93 = 4,088.79 : x
  2. Step 2: Convert to fraction form
    7,074.99/9,762.93 = 4,088.79/x
  3. Step 3: Cross multiply
    7,074.99x = 9,762.93 × 4,088.79
  4. Step 4: Simplify right side
    7,074.99x = 39,918,570.55
  5. Step 5: Solve for x
    x = 39,918,570.55/7,074.99
  6. Step 6: Final answer
    x = 5,642.21

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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.