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Finding the Fourth Proportional to 5,345.51, 7,378.85 and 4,784.99

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Solution

The fourth proportional to 5,345.51, 7,378.85 and 4,784.99 is: 6,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.51 : 7,378.85 = 4,784.99 : x
  2. Step 2: Convert to fraction form
    5,345.51/7,378.85 = 4,784.99/x
  3. Step 3: Cross multiply
    5,345.51x = 7,378.85 × 4,784.99
  4. Step 4: Simplify right side
    5,345.51x = 35,307,662.64
  5. Step 5: Solve for x
    x = 35,307,662.64/5,345.51
  6. Step 6: Final answer
    x = 6,605.11

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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.