Home / 5,320.48-7,980.40-1,860.16

Finding the Fourth Proportional to 5,320.48, 7,980.40 and 1,860.16

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Solution

The fourth proportional to 5,320.48, 7,980.40 and 1,860.16 is: 2,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.48 : 7,980.40 = 1,860.16 : x
  2. Step 2: Convert to fraction form
    5,320.48/7,980.40 = 1,860.16/x
  3. Step 3: Cross multiply
    5,320.48x = 7,980.40 × 1,860.16
  4. Step 4: Simplify right side
    5,320.48x = 14,844,820.86
  5. Step 5: Solve for x
    x = 14,844,820.86/5,320.48
  6. Step 6: Final answer
    x = 2,790.13

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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.