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Finding the Fourth Proportional to 5,320.08, 7,980.48 and 1,810.08

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Solution

The fourth proportional to 5,320.08, 7,980.48 and 1,810.08 is: 2,715.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.08 : 7,980.48 = 1,810.08 : x
  2. Step 2: Convert to fraction form
    5,320.08/7,980.48 = 1,810.08/x
  3. Step 3: Cross multiply
    5,320.08x = 7,980.48 × 1,810.08
  4. Step 4: Simplify right side
    5,320.08x = 14,445,307.24
  5. Step 5: Solve for x
    x = 14,445,307.24/5,320.08
  6. Step 6: Final answer
    x = 2,715.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.