Home / 9,782.36-13,505.51-6,430.79

Finding the Fourth Proportional to 9,782.36, 13,505.51 and 6,430.79

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Solution

The fourth proportional to 9,782.36, 13,505.51 and 6,430.79 is: 8,878.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,782.36 : 13,505.51 = 6,430.79 : x
  2. Step 2: Convert to fraction form
    9,782.36/13,505.51 = 6,430.79/x
  3. Step 3: Cross multiply
    9,782.36x = 13,505.51 × 6,430.79
  4. Step 4: Simplify right side
    9,782.36x = 86,851,098.65
  5. Step 5: Solve for x
    x = 86,851,098.65/9,782.36
  6. Step 6: Final answer
    x = 8,878.34

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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.