Home / 1,870.12-2,807.07-1,686.25

Finding the Fourth Proportional to 1,870.12, 2,807.07 and 1,686.25

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Solution

The fourth proportional to 1,870.12, 2,807.07 and 1,686.25 is: 2,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.12 : 2,807.07 = 1,686.25 : x
  2. Step 2: Convert to fraction form
    1,870.12/2,807.07 = 1,686.25/x
  3. Step 3: Cross multiply
    1,870.12x = 2,807.07 × 1,686.25
  4. Step 4: Simplify right side
    1,870.12x = 4,733,421.79
  5. Step 5: Solve for x
    x = 4,733,421.79/1,870.12
  6. Step 6: Final answer
    x = 2,531.08

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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.