Home / 1,210.07-1,816.93-690.66

Finding the Fourth Proportional to 1,210.07, 1,816.93 and 690.66

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Solution

The fourth proportional to 1,210.07, 1,816.93 and 690.66 is: 1,037.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.07 : 1,816.93 = 690.66 : x
  2. Step 2: Convert to fraction form
    1,210.07/1,816.93 = 690.66/x
  3. Step 3: Cross multiply
    1,210.07x = 1,816.93 × 690.66
  4. Step 4: Simplify right side
    1,210.07x = 1,254,881.74
  5. Step 5: Solve for x
    x = 1,254,881.74/1,210.07
  6. Step 6: Final answer
    x = 1,037.03

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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.