Home / 7,088.90-9,782.70-3,945.02

Finding the Fourth Proportional to 7,088.90, 9,782.70 and 3,945.02

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Solution

The fourth proportional to 7,088.90, 9,782.70 and 3,945.02 is: 5,444.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,088.90 : 9,782.70 = 3,945.02 : x
  2. Step 2: Convert to fraction form
    7,088.90/9,782.70 = 3,945.02/x
  3. Step 3: Cross multiply
    7,088.90x = 9,782.70 × 3,945.02
  4. Step 4: Simplify right side
    7,088.90x = 38,592,971.61
  5. Step 5: Solve for x
    x = 38,592,971.61/7,088.90
  6. Step 6: Final answer
    x = 5,444.14

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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.